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Finding the Fourth Proportional to 15,945.29, 22,004.50 and 8,871.71

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Solution

The fourth proportional to 15,945.29, 22,004.50 and 8,871.71 is: 12,242.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,945.29 : 22,004.50 = 8,871.71 : x
  2. Step 2: Convert to fraction form
    15,945.29/22,004.50 = 8,871.71/x
  3. Step 3: Cross multiply
    15,945.29x = 22,004.50 × 8,871.71
  4. Step 4: Simplify right side
    15,945.29x = 195,217,542.70
  5. Step 5: Solve for x
    x = 195,217,542.70/15,945.29
  6. Step 6: Final answer
    x = 12,242.96

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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.