Home / 18,715.59-25,804.17-11,990.16

Finding the Fourth Proportional to 18,715.59, 25,804.17 and 11,990.16

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Solution

The fourth proportional to 18,715.59, 25,804.17 and 11,990.16 is: 16,531.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715.59 : 25,804.17 = 11,990.16 : x
  2. Step 2: Convert to fraction form
    18,715.59/25,804.17 = 11,990.16/x
  3. Step 3: Cross multiply
    18,715.59x = 25,804.17 × 11,990.16
  4. Step 4: Simplify right side
    18,715.59x = 309,396,126.97
  5. Step 5: Solve for x
    x = 309,396,126.97/18,715.59
  6. Step 6: Final answer
    x = 16,531.47

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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.