Home / 18,770.80-25,902.50-10,387.28

Finding the Fourth Proportional to 18,770.80, 25,902.50 and 10,387.28

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Solution

The fourth proportional to 18,770.80, 25,902.50 and 10,387.28 is: 14,333.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.80 : 25,902.50 = 10,387.28 : x
  2. Step 2: Convert to fraction form
    18,770.80/25,902.50 = 10,387.28/x
  3. Step 3: Cross multiply
    18,770.80x = 25,902.50 × 10,387.28
  4. Step 4: Simplify right side
    18,770.80x = 269,056,520.20
  5. Step 5: Solve for x
    x = 269,056,520.20/18,770.80
  6. Step 6: Final answer
    x = 14,333.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.