Home / 10,642.92-15,964.37-3,247.21

Finding the Fourth Proportional to 10,642.92, 15,964.37 and 3,247.21

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Solution

The fourth proportional to 10,642.92, 15,964.37 and 3,247.21 is: 4,870.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,642.92 : 15,964.37 = 3,247.21 : x
  2. Step 2: Convert to fraction form
    10,642.92/15,964.37 = 3,247.21/x
  3. Step 3: Cross multiply
    10,642.92x = 15,964.37 × 3,247.21
  4. Step 4: Simplify right side
    10,642.92x = 51,839,661.91
  5. Step 5: Solve for x
    x = 51,839,661.91/10,642.92
  6. Step 6: Final answer
    x = 4,870.81

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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.