Home / 20,708.29-31,015.70-9,591.62

Finding the Fourth Proportional to 20,708.29, 31,015.70 and 9,591.62

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Solution

The fourth proportional to 20,708.29, 31,015.70 and 9,591.62 is: 14,365.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.29 : 31,015.70 = 9,591.62 : x
  2. Step 2: Convert to fraction form
    20,708.29/31,015.70 = 9,591.62/x
  3. Step 3: Cross multiply
    20,708.29x = 31,015.70 × 9,591.62
  4. Step 4: Simplify right side
    20,708.29x = 297,490,760.48
  5. Step 5: Solve for x
    x = 297,490,760.48/20,708.29
  6. Step 6: Final answer
    x = 14,365.78

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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.