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Finding the Fourth Proportional to 10,127.99, 15,191.98 and 8,392.97

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Solution

The fourth proportional to 10,127.99, 15,191.98 and 8,392.97 is: 12,589.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,127.99 : 15,191.98 = 8,392.97 : x
  2. Step 2: Convert to fraction form
    10,127.99/15,191.98 = 8,392.97/x
  3. Step 3: Cross multiply
    10,127.99x = 15,191.98 × 8,392.97
  4. Step 4: Simplify right side
    10,127.99x = 127,505,832.38
  5. Step 5: Solve for x
    x = 127,505,832.38/10,127.99
  6. Step 6: Final answer
    x = 12,589.45

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Double scale
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Similar ratio
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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.