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Finding the Fourth Proportional to 19,702.64, 29,545.28 and 7,382

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Solution

The fourth proportional to 19,702.64, 29,545.28 and 7,382 is: 11,069.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,702.64 : 29,545.28 = 7,382 : x
  2. Step 2: Convert to fraction form
    19,702.64/29,545.28 = 7,382/x
  3. Step 3: Cross multiply
    19,702.64x = 29,545.28 × 7,382
  4. Step 4: Simplify right side
    19,702.64x = 218,103,256.96
  5. Step 5: Solve for x
    x = 218,103,256.96/19,702.64
  6. Step 6: Final answer
    x = 11,069.75

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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.