Home / 21,344.08-31,990.20-15,105.93

Finding the Fourth Proportional to 21,344.08, 31,990.20 and 15,105.93

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Solution

The fourth proportional to 21,344.08, 31,990.20 and 15,105.93 is: 22,640.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,344.08 : 31,990.20 = 15,105.93 : x
  2. Step 2: Convert to fraction form
    21,344.08/31,990.20 = 15,105.93/x
  3. Step 3: Cross multiply
    21,344.08x = 31,990.20 × 15,105.93
  4. Step 4: Simplify right side
    21,344.08x = 483,241,721.89
  5. Step 5: Solve for x
    x = 483,241,721.89/21,344.08
  6. Step 6: Final answer
    x = 22,640.55

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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.