Home / 16,035.20-22,129.28-8,961.60

Finding the Fourth Proportional to 16,035.20, 22,129.28 and 8,961.60

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Solution

The fourth proportional to 16,035.20, 22,129.28 and 8,961.60 is: 12,367.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,035.20 : 22,129.28 = 8,961.60 : x
  2. Step 2: Convert to fraction form
    16,035.20/22,129.28 = 8,961.60/x
  3. Step 3: Cross multiply
    16,035.20x = 22,129.28 × 8,961.60
  4. Step 4: Simplify right side
    16,035.20x = 198,313,755.65
  5. Step 5: Solve for x
    x = 198,313,755.65/16,035.20
  6. Step 6: Final answer
    x = 12,367.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.