Home / 20,955,076.80-31,432,615.20-18,435,652.80

Finding the Fourth Proportional to 20,955,076.80, 31,432,615.20 and 18,435,652.80

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Solution

The fourth proportional to 20,955,076.80, 31,432,615.20 and 18,435,652.80 is: 27,653,479.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955,076.80 : 31,432,615.20 = 18,435,652.80 : x
  2. Step 2: Convert to fraction form
    20,955,076.80/31,432,615.20 = 18,435,652.80/x
  3. Step 3: Cross multiply
    20,955,076.80x = 31,432,615.20 × 18,435,652.80
  4. Step 4: Simplify right side
    20,955,076.80x = 579,480,780,423,202.62
  5. Step 5: Solve for x
    x = 579,480,780,423,202.62/20,955,076.80
  6. Step 6: Final answer
    x = 27,653,479.20

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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.