Home / 21,379.28-32,033.86-15,108.66

Finding the Fourth Proportional to 21,379.28, 32,033.86 and 15,108.66

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Solution

The fourth proportional to 21,379.28, 32,033.86 and 15,108.66 is: 22,638.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.28 : 32,033.86 = 15,108.66 : x
  2. Step 2: Convert to fraction form
    21,379.28/32,033.86 = 15,108.66/x
  3. Step 3: Cross multiply
    21,379.28x = 32,033.86 × 15,108.66
  4. Step 4: Simplify right side
    21,379.28x = 483,988,721.52
  5. Step 5: Solve for x
    x = 483,988,721.52/21,379.28
  6. Step 6: Final answer
    x = 22,638.22

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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.