Home / 12,088.91-18,138.95-5,517.11

Finding the Fourth Proportional to 12,088.91, 18,138.95 and 5,517.11

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Solution

The fourth proportional to 12,088.91, 18,138.95 and 5,517.11 is: 8,278.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,088.91 : 18,138.95 = 5,517.11 : x
  2. Step 2: Convert to fraction form
    12,088.91/18,138.95 = 5,517.11/x
  3. Step 3: Cross multiply
    12,088.91x = 18,138.95 × 5,517.11
  4. Step 4: Simplify right side
    12,088.91x = 100,074,464.15
  5. Step 5: Solve for x
    x = 100,074,464.15/12,088.91
  6. Step 6: Final answer
    x = 8,278.21

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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.