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Finding the Fourth Proportional to 15,245.80, 22,868.70 and 5,381.80

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Solution

The fourth proportional to 15,245.80, 22,868.70 and 5,381.80 is: 8,072.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,245.80 : 22,868.70 = 5,381.80 : x
  2. Step 2: Convert to fraction form
    15,245.80/22,868.70 = 5,381.80/x
  3. Step 3: Cross multiply
    15,245.80x = 22,868.70 × 5,381.80
  4. Step 4: Simplify right side
    15,245.80x = 123,074,769.66
  5. Step 5: Solve for x
    x = 123,074,769.66/15,245.80
  6. Step 6: Final answer
    x = 8,072.70

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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.