Home / 10,229.76-15,342.36-3,989.94

Finding the Fourth Proportional to 10,229.76, 15,342.36 and 3,989.94

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Solution

The fourth proportional to 10,229.76, 15,342.36 and 3,989.94 is: 5,984.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,229.76 : 15,342.36 = 3,989.94 : x
  2. Step 2: Convert to fraction form
    10,229.76/15,342.36 = 3,989.94/x
  3. Step 3: Cross multiply
    10,229.76x = 15,342.36 × 3,989.94
  4. Step 4: Simplify right side
    10,229.76x = 61,215,095.86
  5. Step 5: Solve for x
    x = 61,215,095.86/10,229.76
  6. Step 6: Final answer
    x = 5,984.02

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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.