Home / 20,490.75-30,729.26-8,007.53

Finding the Fourth Proportional to 20,490.75, 30,729.26 and 8,007.53

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Solution

The fourth proportional to 20,490.75, 30,729.26 and 8,007.53 is: 12,008.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.75 : 30,729.26 = 8,007.53 : x
  2. Step 2: Convert to fraction form
    20,490.75/30,729.26 = 8,007.53/x
  3. Step 3: Cross multiply
    20,490.75x = 30,729.26 × 8,007.53
  4. Step 4: Simplify right side
    20,490.75x = 246,065,337.70
  5. Step 5: Solve for x
    x = 246,065,337.70/20,490.75
  6. Step 6: Final answer
    x = 12,008.61

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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.