Home / 20,364.81-30,542.28-8,512.17

Finding the Fourth Proportional to 20,364.81, 30,542.28 and 8,512.17

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Solution

The fourth proportional to 20,364.81, 30,542.28 and 8,512.17 is: 12,766.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,364.81 : 30,542.28 = 8,512.17 : x
  2. Step 2: Convert to fraction form
    20,364.81/30,542.28 = 8,512.17/x
  3. Step 3: Cross multiply
    20,364.81x = 30,542.28 × 8,512.17
  4. Step 4: Simplify right side
    20,364.81x = 259,981,079.55
  5. Step 5: Solve for x
    x = 259,981,079.55/20,364.81
  6. Step 6: Final answer
    x = 12,766.19

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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.