Home / 20,356.11-30,512.39-8,506.85

Finding the Fourth Proportional to 20,356.11, 30,512.39 and 8,506.85

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Solution

The fourth proportional to 20,356.11, 30,512.39 and 8,506.85 is: 12,751.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.11 : 30,512.39 = 8,506.85 : x
  2. Step 2: Convert to fraction form
    20,356.11/30,512.39 = 8,506.85/x
  3. Step 3: Cross multiply
    20,356.11x = 30,512.39 × 8,506.85
  4. Step 4: Simplify right side
    20,356.11x = 259,564,129.78
  5. Step 5: Solve for x
    x = 259,564,129.78/20,356.11
  6. Step 6: Final answer
    x = 12,751.17

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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.