Home / 20,747.03-31,117.12-8,902.72

Finding the Fourth Proportional to 20,747.03, 31,117.12 and 8,902.72

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Solution

The fourth proportional to 20,747.03, 31,117.12 and 8,902.72 is: 13,352.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.03 : 31,117.12 = 8,902.72 : x
  2. Step 2: Convert to fraction form
    20,747.03/31,117.12 = 8,902.72/x
  3. Step 3: Cross multiply
    20,747.03x = 31,117.12 × 8,902.72
  4. Step 4: Simplify right side
    20,747.03x = 277,027,006.57
  5. Step 5: Solve for x
    x = 277,027,006.57/20,747.03
  6. Step 6: Final answer
    x = 13,352.61

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1.5x scale

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.