Home / 28,529.28-42,834.24-15,428.16

Finding the Fourth Proportional to 28,529.28, 42,834.24 and 15,428.16

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Solution

The fourth proportional to 28,529.28, 42,834.24 and 15,428.16 is: 23,164.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,529.28 : 42,834.24 = 15,428.16 : x
  2. Step 2: Convert to fraction form
    28,529.28/42,834.24 = 15,428.16/x
  3. Step 3: Cross multiply
    28,529.28x = 42,834.24 × 15,428.16
  4. Step 4: Simplify right side
    28,529.28x = 660,853,508.20
  5. Step 5: Solve for x
    x = 660,853,508.20/28,529.28
  6. Step 6: Final answer
    x = 23,164.04

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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.