Home / 18,747.43-25,854.68-15,555.65

Finding the Fourth Proportional to 18,747.43, 25,854.68 and 15,555.65

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Solution

The fourth proportional to 18,747.43, 25,854.68 and 15,555.65 is: 21,452.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.43 : 25,854.68 = 15,555.65 : x
  2. Step 2: Convert to fraction form
    18,747.43/25,854.68 = 15,555.65/x
  3. Step 3: Cross multiply
    18,747.43x = 25,854.68 × 15,555.65
  4. Step 4: Simplify right side
    18,747.43x = 402,186,262.56
  5. Step 5: Solve for x
    x = 402,186,262.56/18,747.43
  6. Step 6: Final answer
    x = 21,452.88

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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.