Home / 10,215.17-15,322.79-2,819.46

Finding the Fourth Proportional to 10,215.17, 15,322.79 and 2,819.46

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Solution

The fourth proportional to 10,215.17, 15,322.79 and 2,819.46 is: 4,229.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.17 : 15,322.79 = 2,819.46 : x
  2. Step 2: Convert to fraction form
    10,215.17/15,322.79 = 2,819.46/x
  3. Step 3: Cross multiply
    10,215.17x = 15,322.79 × 2,819.46
  4. Step 4: Simplify right side
    10,215.17x = 43,201,993.49
  5. Step 5: Solve for x
    x = 43,201,993.49/10,215.17
  6. Step 6: Final answer
    x = 4,229.20

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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.