Home / 18,516.88-25,575.15-12,538.18

Finding the Fourth Proportional to 18,516.88, 25,575.15 and 12,538.18

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Solution

The fourth proportional to 18,516.88, 25,575.15 and 12,538.18 is: 17,317.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,516.88 : 25,575.15 = 12,538.18 : x
  2. Step 2: Convert to fraction form
    18,516.88/25,575.15 = 12,538.18/x
  3. Step 3: Cross multiply
    18,516.88x = 25,575.15 × 12,538.18
  4. Step 4: Simplify right side
    18,516.88x = 320,665,834.23
  5. Step 5: Solve for x
    x = 320,665,834.23/18,516.88
  6. Step 6: Final answer
    x = 17,317.49

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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.