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Finding the Fourth Proportional to 18,757.55, 25,870.48 and 15,934.27

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Solution

The fourth proportional to 18,757.55, 25,870.48 and 15,934.27 is: 21,976.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,757.55 : 25,870.48 = 15,934.27 : x
  2. Step 2: Convert to fraction form
    18,757.55/25,870.48 = 15,934.27/x
  3. Step 3: Cross multiply
    18,757.55x = 25,870.48 × 15,934.27
  4. Step 4: Simplify right side
    18,757.55x = 412,227,198.35
  5. Step 5: Solve for x
    x = 412,227,198.35/18,757.55
  6. Step 6: Final answer
    x = 21,976.60

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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.