Home / 18,370.22-25,350.82-9,986.90

Finding the Fourth Proportional to 18,370.22, 25,350.82 and 9,986.90

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Solution

The fourth proportional to 18,370.22, 25,350.82 and 9,986.90 is: 13,781.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,370.22 : 25,350.82 = 9,986.90 : x
  2. Step 2: Convert to fraction form
    18,370.22/25,350.82 = 9,986.90/x
  3. Step 3: Cross multiply
    18,370.22x = 25,350.82 × 9,986.90
  4. Step 4: Simplify right side
    18,370.22x = 253,175,952.54
  5. Step 5: Solve for x
    x = 253,175,952.54/18,370.22
  6. Step 6: Final answer
    x = 13,781.87

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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.