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Finding the Fourth Proportional to 12,387.99, 18,549.17 and 6,532.30

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Solution

The fourth proportional to 12,387.99, 18,549.17 and 6,532.30 is: 9,781.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.99 : 18,549.17 = 6,532.30 : x
  2. Step 2: Convert to fraction form
    12,387.99/18,549.17 = 6,532.30/x
  3. Step 3: Cross multiply
    12,387.99x = 18,549.17 × 6,532.30
  4. Step 4: Simplify right side
    12,387.99x = 121,168,743.19
  5. Step 5: Solve for x
    x = 121,168,743.19/12,387.99
  6. Step 6: Final answer
    x = 9,781.15

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1.5x scale

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.