Home / 20,799.18-31,202.42-9,109.71

Finding the Fourth Proportional to 20,799.18, 31,202.42 and 9,109.71

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Solution

The fourth proportional to 20,799.18, 31,202.42 and 9,109.71 is: 13,666.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.18 : 31,202.42 = 9,109.71 : x
  2. Step 2: Convert to fraction form
    20,799.18/31,202.42 = 9,109.71/x
  3. Step 3: Cross multiply
    20,799.18x = 31,202.42 × 9,109.71
  4. Step 4: Simplify right side
    20,799.18x = 284,244,951.95
  5. Step 5: Solve for x
    x = 284,244,951.95/20,799.18
  6. Step 6: Final answer
    x = 13,666.16

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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.