Home / 18,387.45-25,382.25-13,912.59

Finding the Fourth Proportional to 18,387.45, 25,382.25 and 13,912.59

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Solution

The fourth proportional to 18,387.45, 25,382.25 and 13,912.59 is: 19,205.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.45 : 25,382.25 = 13,912.59 : x
  2. Step 2: Convert to fraction form
    18,387.45/25,382.25 = 13,912.59/x
  3. Step 3: Cross multiply
    18,387.45x = 25,382.25 × 13,912.59
  4. Step 4: Simplify right side
    18,387.45x = 353,132,837.53
  5. Step 5: Solve for x
    x = 353,132,837.53/18,387.45
  6. Step 6: Final answer
    x = 19,205.10

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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.