Home / 10,219.97-15,335.77-3,979.17

Finding the Fourth Proportional to 10,219.97, 15,335.77 and 3,979.17

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Solution

The fourth proportional to 10,219.97, 15,335.77 and 3,979.17 is: 5,971.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,219.97 : 15,335.77 = 3,979.17 : x
  2. Step 2: Convert to fraction form
    10,219.97/15,335.77 = 3,979.17/x
  3. Step 3: Cross multiply
    10,219.97x = 15,335.77 × 3,979.17
  4. Step 4: Simplify right side
    10,219.97x = 61,023,635.91
  5. Step 5: Solve for x
    x = 61,023,635.91/10,219.97
  6. Step 6: Final answer
    x = 5,971.02

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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.