Home / 15,474.24-21,354.57-8,400.69

Finding the Fourth Proportional to 15,474.24, 21,354.57 and 8,400.69

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Solution

The fourth proportional to 15,474.24, 21,354.57 and 8,400.69 is: 11,593.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,474.24 : 21,354.57 = 8,400.69 : x
  2. Step 2: Convert to fraction form
    15,474.24/21,354.57 = 8,400.69/x
  3. Step 3: Cross multiply
    15,474.24x = 21,354.57 × 8,400.69
  4. Step 4: Simplify right side
    15,474.24x = 179,393,122.65
  5. Step 5: Solve for x
    x = 179,393,122.65/15,474.24
  6. Step 6: Final answer
    x = 11,593.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.