Home / 22,815.42-31,481.91-13,387.02

Finding the Fourth Proportional to 22,815.42, 31,481.91 and 13,387.02

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Solution

The fourth proportional to 22,815.42, 31,481.91 and 13,387.02 is: 18,472.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,815.42 : 31,481.91 = 13,387.02 : x
  2. Step 2: Convert to fraction form
    22,815.42/31,481.91 = 13,387.02/x
  3. Step 3: Cross multiply
    22,815.42x = 31,481.91 × 13,387.02
  4. Step 4: Simplify right side
    22,815.42x = 421,448,958.81
  5. Step 5: Solve for x
    x = 421,448,958.81/22,815.42
  6. Step 6: Final answer
    x = 18,472.11

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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.