Home / 20,717.27-31,074.54-8,871.02

Finding the Fourth Proportional to 20,717.27, 31,074.54 and 8,871.02

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Solution

The fourth proportional to 20,717.27, 31,074.54 and 8,871.02 is: 13,305.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.27 : 31,074.54 = 8,871.02 : x
  2. Step 2: Convert to fraction form
    20,717.27/31,074.54 = 8,871.02/x
  3. Step 3: Cross multiply
    20,717.27x = 31,074.54 × 8,871.02
  4. Step 4: Simplify right side
    20,717.27x = 275,662,793.72
  5. Step 5: Solve for x
    x = 275,662,793.72/20,717.27
  6. Step 6: Final answer
    x = 13,305.94

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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.