Home / 22,815.11-31,484.52-12,743.70

Finding the Fourth Proportional to 22,815.11, 31,484.52 and 12,743.70

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Solution

The fourth proportional to 22,815.11, 31,484.52 and 12,743.70 is: 17,586.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,815.11 : 31,484.52 = 12,743.70 : x
  2. Step 2: Convert to fraction form
    22,815.11/31,484.52 = 12,743.70/x
  3. Step 3: Cross multiply
    22,815.11x = 31,484.52 × 12,743.70
  4. Step 4: Simplify right side
    22,815.11x = 401,229,277.52
  5. Step 5: Solve for x
    x = 401,229,277.52/22,815.11
  6. Step 6: Final answer
    x = 17,586.12

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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.