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Finding the Fourth Proportional to 15,550.80, 23,326.20 and 8,989.80

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Solution

The fourth proportional to 15,550.80, 23,326.20 and 8,989.80 is: 13,484.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,550.80 : 23,326.20 = 8,989.80 : x
  2. Step 2: Convert to fraction form
    15,550.80/23,326.20 = 8,989.80/x
  3. Step 3: Cross multiply
    15,550.80x = 23,326.20 × 8,989.80
  4. Step 4: Simplify right side
    15,550.80x = 209,697,872.76
  5. Step 5: Solve for x
    x = 209,697,872.76/15,550.80
  6. Step 6: Final answer
    x = 13,484.70

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Double scale
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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.