Home / 15,839.91-21,861.42-9,124.26

Finding the Fourth Proportional to 15,839.91, 21,861.42 and 9,124.26

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Solution

The fourth proportional to 15,839.91, 21,861.42 and 9,124.26 is: 12,592.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,839.91 : 21,861.42 = 9,124.26 : x
  2. Step 2: Convert to fraction form
    15,839.91/21,861.42 = 9,124.26/x
  3. Step 3: Cross multiply
    15,839.91x = 21,861.42 × 9,124.26
  4. Step 4: Simplify right side
    15,839.91x = 199,469,280.05
  5. Step 5: Solve for x
    x = 199,469,280.05/15,839.91
  6. Step 6: Final answer
    x = 12,592.83

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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.