Home / 10,391.76-15,591.24-6,491.52

Finding the Fourth Proportional to 10,391.76, 15,591.24 and 6,491.52

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Solution

The fourth proportional to 10,391.76, 15,591.24 and 6,491.52 is: 9,739.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,391.76 : 15,591.24 = 6,491.52 : x
  2. Step 2: Convert to fraction form
    10,391.76/15,591.24 = 6,491.52/x
  3. Step 3: Cross multiply
    10,391.76x = 15,591.24 × 6,491.52
  4. Step 4: Simplify right side
    10,391.76x = 101,210,846.28
  5. Step 5: Solve for x
    x = 101,210,846.28/10,391.76
  6. Step 6: Final answer
    x = 9,739.53

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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.