Home / 18,535,987,966.80-27,803,981,950.20-12,658,675,659.60

Finding the Fourth Proportional to 18,535,987,966.80, 27,803,981,950.20 and 12,658,675,659.60

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Solution

The fourth proportional to 18,535,987,966.80, 27,803,981,950.20 and 12,658,675,659.60 is: 18,988,013,489.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,535,987,966.80 : 27,803,981,950.20 = 12,658,675,659.60 : x
  2. Step 2: Convert to fraction form
    18,535,987,966.80/27,803,981,950.20 = 12,658,675,659.60/x
  3. Step 3: Cross multiply
    18,535,987,966.80x = 27,803,981,950.20 × 12,658,675,659.60
  4. Step 4: Simplify right side
    18,535,987,966.80x = 351,961,589,552,954,474,496
  5. Step 5: Solve for x
    x = 351,961,589,552,954,474,496/18,535,987,966.80
  6. Step 6: Final answer
    x = 18,988,013,489.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.