Home / 10,517.24-15,775.32-3,121.76

Finding the Fourth Proportional to 10,517.24, 15,775.32 and 3,121.76

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Solution

The fourth proportional to 10,517.24, 15,775.32 and 3,121.76 is: 4,682.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,517.24 : 15,775.32 = 3,121.76 : x
  2. Step 2: Convert to fraction form
    10,517.24/15,775.32 = 3,121.76/x
  3. Step 3: Cross multiply
    10,517.24x = 15,775.32 × 3,121.76
  4. Step 4: Simplify right side
    10,517.24x = 49,246,762.96
  5. Step 5: Solve for x
    x = 49,246,762.96/10,517.24
  6. Step 6: Final answer
    x = 4,682.48

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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.