Home / 12,151.28-18,227.48-3,386

Finding the Fourth Proportional to 12,151.28, 18,227.48 and 3,386

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Solution

The fourth proportional to 12,151.28, 18,227.48 and 3,386 is: 5,079.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,151.28 : 18,227.48 = 3,386 : x
  2. Step 2: Convert to fraction form
    12,151.28/18,227.48 = 3,386/x
  3. Step 3: Cross multiply
    12,151.28x = 18,227.48 × 3,386
  4. Step 4: Simplify right side
    12,151.28x = 61,718,247.28
  5. Step 5: Solve for x
    x = 61,718,247.28/12,151.28
  6. Step 6: Final answer
    x = 5,079.16

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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.