Home / 18,115.89-24,988.42-13,087.49

Finding the Fourth Proportional to 18,115.89, 24,988.42 and 13,087.49

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Solution

The fourth proportional to 18,115.89, 24,988.42 and 13,087.49 is: 18,052.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.89 : 24,988.42 = 13,087.49 : x
  2. Step 2: Convert to fraction form
    18,115.89/24,988.42 = 13,087.49/x
  3. Step 3: Cross multiply
    18,115.89x = 24,988.42 × 13,087.49
  4. Step 4: Simplify right side
    18,115.89x = 327,035,726.62
  5. Step 5: Solve for x
    x = 327,035,726.62/18,115.89
  6. Step 6: Final answer
    x = 18,052.43

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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.