Home / 12,133.20-18,196.74-8,612.88

Finding the Fourth Proportional to 12,133.20, 18,196.74 and 8,612.88

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Solution

The fourth proportional to 12,133.20, 18,196.74 and 8,612.88 is: 12,917.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,133.20 : 18,196.74 = 8,612.88 : x
  2. Step 2: Convert to fraction form
    12,133.20/18,196.74 = 8,612.88/x
  3. Step 3: Cross multiply
    12,133.20x = 18,196.74 × 8,612.88
  4. Step 4: Simplify right side
    12,133.20x = 156,726,338.01
  5. Step 5: Solve for x
    x = 156,726,338.01/12,133.20
  6. Step 6: Final answer
    x = 12,917.15

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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.