Home / 18,839.50-28,257.31-9,475.70

Finding the Fourth Proportional to 18,839.50, 28,257.31 and 9,475.70

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Solution

The fourth proportional to 18,839.50, 28,257.31 and 9,475.70 is: 14,212.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,839.50 : 28,257.31 = 9,475.70 : x
  2. Step 2: Convert to fraction form
    18,839.50/28,257.31 = 9,475.70/x
  3. Step 3: Cross multiply
    18,839.50x = 28,257.31 × 9,475.70
  4. Step 4: Simplify right side
    18,839.50x = 267,757,768.57
  5. Step 5: Solve for x
    x = 267,757,768.57/18,839.50
  6. Step 6: Final answer
    x = 14,212.57

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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.