Home / 10,480.19-15,721.38-3,458.15

Finding the Fourth Proportional to 10,480.19, 15,721.38 and 3,458.15

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Solution

The fourth proportional to 10,480.19, 15,721.38 and 3,458.15 is: 5,187.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,480.19 : 15,721.38 = 3,458.15 : x
  2. Step 2: Convert to fraction form
    10,480.19/15,721.38 = 3,458.15/x
  3. Step 3: Cross multiply
    10,480.19x = 15,721.38 × 3,458.15
  4. Step 4: Simplify right side
    10,480.19x = 54,366,890.25
  5. Step 5: Solve for x
    x = 54,366,890.25/10,480.19
  6. Step 6: Final answer
    x = 5,187.59

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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.