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Finding the Fourth Proportional to 12,614.87, 18,988.09 and 10,712.18

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Solution

The fourth proportional to 12,614.87, 18,988.09 and 10,712.18 is: 16,124.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,614.87 : 18,988.09 = 10,712.18 : x
  2. Step 2: Convert to fraction form
    12,614.87/18,988.09 = 10,712.18/x
  3. Step 3: Cross multiply
    12,614.87x = 18,988.09 × 10,712.18
  4. Step 4: Simplify right side
    12,614.87x = 203,403,837.94
  5. Step 5: Solve for x
    x = 203,403,837.94/12,614.87
  6. Step 6: Final answer
    x = 16,124.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.