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Finding the Fourth Proportional to 15,552.80, 23,329.20 and 8,991.80

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Solution

The fourth proportional to 15,552.80, 23,329.20 and 8,991.80 is: 13,487.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,552.80 : 23,329.20 = 8,991.80 : x
  2. Step 2: Convert to fraction form
    15,552.80/23,329.20 = 8,991.80/x
  3. Step 3: Cross multiply
    15,552.80x = 23,329.20 × 8,991.80
  4. Step 4: Simplify right side
    15,552.80x = 209,771,500.56
  5. Step 5: Solve for x
    x = 209,771,500.56/15,552.80
  6. Step 6: Final answer
    x = 13,487.70

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Similar ratio
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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.