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Finding the Fourth Proportional to 22,805.31, 34,186.62 and 11,687.40

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Solution

The fourth proportional to 22,805.31, 34,186.62 and 11,687.40 is: 17,520.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,805.31 : 34,186.62 = 11,687.40 : x
  2. Step 2: Convert to fraction form
    22,805.31/34,186.62 = 11,687.40/x
  3. Step 3: Cross multiply
    22,805.31x = 34,186.62 × 11,687.40
  4. Step 4: Simplify right side
    22,805.31x = 399,552,702.59
  5. Step 5: Solve for x
    x = 399,552,702.59/22,805.31
  6. Step 6: Final answer
    x = 17,520.16

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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.