Home / 20,324.10-28,057.44-12,781.38

Finding the Fourth Proportional to 20,324.10, 28,057.44 and 12,781.38

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Solution

The fourth proportional to 20,324.10, 28,057.44 and 12,781.38 is: 17,644.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,324.10 : 28,057.44 = 12,781.38 : x
  2. Step 2: Convert to fraction form
    20,324.10/28,057.44 = 12,781.38/x
  3. Step 3: Cross multiply
    20,324.10x = 28,057.44 × 12,781.38
  4. Step 4: Simplify right side
    20,324.10x = 358,612,802.47
  5. Step 5: Solve for x
    x = 358,612,802.47/20,324.10
  6. Step 6: Final answer
    x = 17,644.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.