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Finding the Fourth Proportional to 25,751.60, 38,617.67 and 11,890.88

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Solution

The fourth proportional to 25,751.60, 38,617.67 and 11,890.88 is: 17,831.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,751.60 : 38,617.67 = 11,890.88 : x
  2. Step 2: Convert to fraction form
    25,751.60/38,617.67 = 11,890.88/x
  3. Step 3: Cross multiply
    25,751.60x = 38,617.67 × 11,890.88
  4. Step 4: Simplify right side
    25,751.60x = 459,198,079.85
  5. Step 5: Solve for x
    x = 459,198,079.85/25,751.60
  6. Step 6: Final answer
    x = 17,831.83

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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.