Home / 15,147-22,721.31-4,759.56

Finding the Fourth Proportional to 15,147, 22,721.31 and 4,759.56

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Solution

The fourth proportional to 15,147, 22,721.31 and 4,759.56 is: 7,139.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,147 : 22,721.31 = 4,759.56 : x
  2. Step 2: Convert to fraction form
    15,147/22,721.31 = 4,759.56/x
  3. Step 3: Cross multiply
    15,147x = 22,721.31 × 4,759.56
  4. Step 4: Simplify right side
    15,147x = 108,143,438.22
  5. Step 5: Solve for x
    x = 108,143,438.22/15,147
  6. Step 6: Final answer
    x = 7,139.59

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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.