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Finding the Fourth Proportional to 11,702.52, 17,553.78 and 5,127.21

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Solution

The fourth proportional to 11,702.52, 17,553.78 and 5,127.21 is: 7,690.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,702.52 : 17,553.78 = 5,127.21 : x
  2. Step 2: Convert to fraction form
    11,702.52/17,553.78 = 5,127.21/x
  3. Step 3: Cross multiply
    11,702.52x = 17,553.78 × 5,127.21
  4. Step 4: Simplify right side
    11,702.52x = 90,001,916.35
  5. Step 5: Solve for x
    x = 90,001,916.35/11,702.52
  6. Step 6: Final answer
    x = 7,690.82

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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.