Home / 20,854,719.40-31,282,079.10-12,330,668.20

Finding the Fourth Proportional to 20,854,719.40, 31,282,079.10 and 12,330,668.20

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Solution

The fourth proportional to 20,854,719.40, 31,282,079.10 and 12,330,668.20 is: 18,496,002.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854,719.40 : 31,282,079.10 = 12,330,668.20 : x
  2. Step 2: Convert to fraction form
    20,854,719.40/31,282,079.10 = 12,330,668.20/x
  3. Step 3: Cross multiply
    20,854,719.40x = 31,282,079.10 × 12,330,668.20
  4. Step 4: Simplify right side
    20,854,719.40x = 385,728,937,988,254.62
  5. Step 5: Solve for x
    x = 385,728,937,988,254.62/20,854,719.40
  6. Step 6: Final answer
    x = 18,496,002.30

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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.