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Finding the Fourth Proportional to 25,399.98, 38,101.80 and 8,759.78

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Solution

The fourth proportional to 25,399.98, 38,101.80 and 8,759.78 is: 13,140.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,399.98 : 38,101.80 = 8,759.78 : x
  2. Step 2: Convert to fraction form
    25,399.98/38,101.80 = 8,759.78/x
  3. Step 3: Cross multiply
    25,399.98x = 38,101.80 × 8,759.78
  4. Step 4: Simplify right side
    25,399.98x = 333,763,195.10
  5. Step 5: Solve for x
    x = 333,763,195.10/25,399.98
  6. Step 6: Final answer
    x = 13,140.29

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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.