Home / 10,615.41-15,921.32-3,218.11

Finding the Fourth Proportional to 10,615.41, 15,921.32 and 3,218.11

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Solution

The fourth proportional to 10,615.41, 15,921.32 and 3,218.11 is: 4,826.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,615.41 : 15,921.32 = 3,218.11 : x
  2. Step 2: Convert to fraction form
    10,615.41/15,921.32 = 3,218.11/x
  3. Step 3: Cross multiply
    10,615.41x = 15,921.32 × 3,218.11
  4. Step 4: Simplify right side
    10,615.41x = 51,236,503.21
  5. Step 5: Solve for x
    x = 51,236,503.21/10,615.41
  6. Step 6: Final answer
    x = 4,826.62

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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.