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Finding the Fourth Proportional to 25,599.88, 38,399.82 and 7,131.88

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Solution

The fourth proportional to 25,599.88, 38,399.82 and 7,131.88 is: 10,697.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,599.88 : 38,399.82 = 7,131.88 : x
  2. Step 2: Convert to fraction form
    25,599.88/38,399.82 = 7,131.88/x
  3. Step 3: Cross multiply
    25,599.88x = 38,399.82 × 7,131.88
  4. Step 4: Simplify right side
    25,599.88x = 273,862,680.60
  5. Step 5: Solve for x
    x = 273,862,680.60/25,599.88
  6. Step 6: Final answer
    x = 10,697.81

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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.