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Finding the Fourth Proportional to 18,877.76, 28,318.80 and 9,010.88

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Solution

The fourth proportional to 18,877.76, 28,318.80 and 9,010.88 is: 13,517.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,877.76 : 28,318.80 = 9,010.88 : x
  2. Step 2: Convert to fraction form
    18,877.76/28,318.80 = 9,010.88/x
  3. Step 3: Cross multiply
    18,877.76x = 28,318.80 × 9,010.88
  4. Step 4: Simplify right side
    18,877.76x = 255,177,308.54
  5. Step 5: Solve for x
    x = 255,177,308.54/18,877.76
  6. Step 6: Final answer
    x = 13,517.35

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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.