Home / 20,766.74-31,141.92-9,071.78

Finding the Fourth Proportional to 20,766.74, 31,141.92 and 9,071.78

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Solution

The fourth proportional to 20,766.74, 31,141.92 and 9,071.78 is: 13,604.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.74 : 31,141.92 = 9,071.78 : x
  2. Step 2: Convert to fraction form
    20,766.74/31,141.92 = 9,071.78/x
  3. Step 3: Cross multiply
    20,766.74x = 31,141.92 × 9,071.78
  4. Step 4: Simplify right side
    20,766.74x = 282,512,647.02
  5. Step 5: Solve for x
    x = 282,512,647.02/20,766.74
  6. Step 6: Final answer
    x = 13,604.09

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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.