Home / 15,912.12-23,876.31-7,145.22

Finding the Fourth Proportional to 15,912.12, 23,876.31 and 7,145.22

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Solution

The fourth proportional to 15,912.12, 23,876.31 and 7,145.22 is: 10,721.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,912.12 : 23,876.31 = 7,145.22 : x
  2. Step 2: Convert to fraction form
    15,912.12/23,876.31 = 7,145.22/x
  3. Step 3: Cross multiply
    15,912.12x = 23,876.31 × 7,145.22
  4. Step 4: Simplify right side
    15,912.12x = 170,601,487.74
  5. Step 5: Solve for x
    x = 170,601,487.74/15,912.12
  6. Step 6: Final answer
    x = 10,721.48

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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.