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Finding the Fourth Proportional to 12,356.61, 17,052.16 and 6,691.42

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Solution

The fourth proportional to 12,356.61, 17,052.16 and 6,691.42 is: 9,234.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356.61 : 17,052.16 = 6,691.42 : x
  2. Step 2: Convert to fraction form
    12,356.61/17,052.16 = 6,691.42/x
  3. Step 3: Cross multiply
    12,356.61x = 17,052.16 × 6,691.42
  4. Step 4: Simplify right side
    12,356.61x = 114,103,164.47
  5. Step 5: Solve for x
    x = 114,103,164.47/12,356.61
  6. Step 6: Final answer
    x = 9,234.18

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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.