Home / 10,617.28-15,925.11-3,221.78

Finding the Fourth Proportional to 10,617.28, 15,925.11 and 3,221.78

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Solution

The fourth proportional to 10,617.28, 15,925.11 and 3,221.78 is: 4,832.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,617.28 : 15,925.11 = 3,221.78 : x
  2. Step 2: Convert to fraction form
    10,617.28/15,925.11 = 3,221.78/x
  3. Step 3: Cross multiply
    10,617.28x = 15,925.11 × 3,221.78
  4. Step 4: Simplify right side
    10,617.28x = 51,307,216.89
  5. Step 5: Solve for x
    x = 51,307,216.89/10,617.28
  6. Step 6: Final answer
    x = 4,832.42

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1.5x scale

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.