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Finding the Fourth Proportional to 13,761.72, 20,641.08 and 9,347.76

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Solution

The fourth proportional to 13,761.72, 20,641.08 and 9,347.76 is: 14,020.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,761.72 : 20,641.08 = 9,347.76 : x
  2. Step 2: Convert to fraction form
    13,761.72/20,641.08 = 9,347.76/x
  3. Step 3: Cross multiply
    13,761.72x = 20,641.08 × 9,347.76
  4. Step 4: Simplify right side
    13,761.72x = 192,947,861.98
  5. Step 5: Solve for x
    x = 192,947,861.98/13,761.72
  6. Step 6: Final answer
    x = 14,020.62

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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.