Home / 18,770.50-28,133.28-8,761.78

Finding the Fourth Proportional to 18,770.50, 28,133.28 and 8,761.78

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Solution

The fourth proportional to 18,770.50, 28,133.28 and 8,761.78 is: 13,132.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.50 : 28,133.28 = 8,761.78 : x
  2. Step 2: Convert to fraction form
    18,770.50/28,133.28 = 8,761.78/x
  3. Step 3: Cross multiply
    18,770.50x = 28,133.28 × 8,761.78
  4. Step 4: Simplify right side
    18,770.50x = 246,497,610.04
  5. Step 5: Solve for x
    x = 246,497,610.04/18,770.50
  6. Step 6: Final answer
    x = 13,132.18

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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.