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Finding the Fourth Proportional to 21,502.29, 32,255.48 and 8,355.68

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Solution

The fourth proportional to 21,502.29, 32,255.48 and 8,355.68 is: 12,534.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,502.29 : 32,255.48 = 8,355.68 : x
  2. Step 2: Convert to fraction form
    21,502.29/32,255.48 = 8,355.68/x
  3. Step 3: Cross multiply
    21,502.29x = 32,255.48 × 8,355.68
  4. Step 4: Simplify right side
    21,502.29x = 269,516,469.13
  5. Step 5: Solve for x
    x = 269,516,469.13/21,502.29
  6. Step 6: Final answer
    x = 12,534.31

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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.