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Finding the Fourth Proportional to 21,532.92, 29,729.92 and 19,257.19

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Solution

The fourth proportional to 21,532.92, 29,729.92 and 19,257.19 is: 26,587.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,532.92 : 29,729.92 = 19,257.19 : x
  2. Step 2: Convert to fraction form
    21,532.92/29,729.92 = 19,257.19/x
  3. Step 3: Cross multiply
    21,532.92x = 29,729.92 × 19,257.19
  4. Step 4: Simplify right side
    21,532.92x = 572,514,569.48
  5. Step 5: Solve for x
    x = 572,514,569.48/21,532.92
  6. Step 6: Final answer
    x = 26,587.88

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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.