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Finding the Fourth Proportional to 25,934.80, 38,902.20 and 8,404.38

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Solution

The fourth proportional to 25,934.80, 38,902.20 and 8,404.38 is: 12,606.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,934.80 : 38,902.20 = 8,404.38 : x
  2. Step 2: Convert to fraction form
    25,934.80/38,902.20 = 8,404.38/x
  3. Step 3: Cross multiply
    25,934.80x = 38,902.20 × 8,404.38
  4. Step 4: Simplify right side
    25,934.80x = 326,948,871.64
  5. Step 5: Solve for x
    x = 326,948,871.64/25,934.80
  6. Step 6: Final answer
    x = 12,606.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.