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Finding the Fourth Proportional to 21,569.36, 32,358.89 and 8,425.49

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Solution

The fourth proportional to 21,569.36, 32,358.89 and 8,425.49 is: 12,640.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,569.36 : 32,358.89 = 8,425.49 : x
  2. Step 2: Convert to fraction form
    21,569.36/32,358.89 = 8,425.49/x
  3. Step 3: Cross multiply
    21,569.36x = 32,358.89 × 8,425.49
  4. Step 4: Simplify right side
    21,569.36x = 272,639,363.38
  5. Step 5: Solve for x
    x = 272,639,363.38/21,569.36
  6. Step 6: Final answer
    x = 12,640.13

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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.