Home / 12,082.88-18,117.05-5,418.17

Finding the Fourth Proportional to 12,082.88, 18,117.05 and 5,418.17

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Solution

The fourth proportional to 12,082.88, 18,117.05 and 5,418.17 is: 8,123.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,082.88 : 18,117.05 = 5,418.17 : x
  2. Step 2: Convert to fraction form
    12,082.88/18,117.05 = 5,418.17/x
  3. Step 3: Cross multiply
    12,082.88x = 18,117.05 × 5,418.17
  4. Step 4: Simplify right side
    12,082.88x = 98,161,275.00
  5. Step 5: Solve for x
    x = 98,161,275.00/12,082.88
  6. Step 6: Final answer
    x = 8,123.99

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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.