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Finding the Fourth Proportional to 21,763.54, 32,640.52 and 7,531.18

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Solution

The fourth proportional to 21,763.54, 32,640.52 and 7,531.18 is: 11,295.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,763.54 : 32,640.52 = 7,531.18 : x
  2. Step 2: Convert to fraction form
    21,763.54/32,640.52 = 7,531.18/x
  3. Step 3: Cross multiply
    21,763.54x = 32,640.52 × 7,531.18
  4. Step 4: Simplify right side
    21,763.54x = 245,821,545.11
  5. Step 5: Solve for x
    x = 245,821,545.11/21,763.54
  6. Step 6: Final answer
    x = 11,295.11

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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.