Home / 15,711.22-21,685.17-9,000.69

Finding the Fourth Proportional to 15,711.22, 21,685.17 and 9,000.69

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Solution

The fourth proportional to 15,711.22, 21,685.17 and 9,000.69 is: 12,423.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,711.22 : 21,685.17 = 9,000.69 : x
  2. Step 2: Convert to fraction form
    15,711.22/21,685.17 = 9,000.69/x
  3. Step 3: Cross multiply
    15,711.22x = 21,685.17 × 9,000.69
  4. Step 4: Simplify right side
    15,711.22x = 195,181,492.77
  5. Step 5: Solve for x
    x = 195,181,492.77/15,711.22
  6. Step 6: Final answer
    x = 12,423.06

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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.