Home / 33,120.28-49,680.12-13,398.52

Finding the Fourth Proportional to 33,120.28, 49,680.12 and 13,398.52

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Solution

The fourth proportional to 33,120.28, 49,680.12 and 13,398.52 is: 20,097.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,120.28 : 49,680.12 = 13,398.52 : x
  2. Step 2: Convert to fraction form
    33,120.28/49,680.12 = 13,398.52/x
  3. Step 3: Cross multiply
    33,120.28x = 49,680.12 × 13,398.52
  4. Step 4: Simplify right side
    33,120.28x = 665,640,081.42
  5. Step 5: Solve for x
    x = 665,640,081.42/33,120.28
  6. Step 6: Final answer
    x = 20,097.66

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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.