Home / 20,734.38-31,112.71-9,046.89

Finding the Fourth Proportional to 20,734.38, 31,112.71 and 9,046.89

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Solution

The fourth proportional to 20,734.38, 31,112.71 and 9,046.89 is: 13,575.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.38 : 31,112.71 = 9,046.89 : x
  2. Step 2: Convert to fraction form
    20,734.38/31,112.71 = 9,046.89/x
  3. Step 3: Cross multiply
    20,734.38x = 31,112.71 × 9,046.89
  4. Step 4: Simplify right side
    20,734.38x = 281,473,242.35
  5. Step 5: Solve for x
    x = 281,473,242.35/20,734.38
  6. Step 6: Final answer
    x = 13,575.19

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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.