Home / 25,990.24-38,990.88-8,459.68

Finding the Fourth Proportional to 25,990.24, 38,990.88 and 8,459.68

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Solution

The fourth proportional to 25,990.24, 38,990.88 and 8,459.68 is: 12,691.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,990.24 : 38,990.88 = 8,459.68 : x
  2. Step 2: Convert to fraction form
    25,990.24/38,990.88 = 8,459.68/x
  3. Step 3: Cross multiply
    25,990.24x = 38,990.88 × 8,459.68
  4. Step 4: Simplify right side
    25,990.24x = 329,850,367.72
  5. Step 5: Solve for x
    x = 329,850,367.72/25,990.24
  6. Step 6: Final answer
    x = 12,691.32

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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.