Home / 20,404.66-28,151.40-11,450.92

Finding the Fourth Proportional to 20,404.66, 28,151.40 and 11,450.92

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Solution

The fourth proportional to 20,404.66, 28,151.40 and 11,450.92 is: 15,798.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.66 : 28,151.40 = 11,450.92 : x
  2. Step 2: Convert to fraction form
    20,404.66/28,151.40 = 11,450.92/x
  3. Step 3: Cross multiply
    20,404.66x = 28,151.40 × 11,450.92
  4. Step 4: Simplify right side
    20,404.66x = 322,359,429.29
  5. Step 5: Solve for x
    x = 322,359,429.29/20,404.66
  6. Step 6: Final answer
    x = 15,798.32

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Double scale
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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.