Home / 20,882.12-31,323.12-5,299.70

Finding the Fourth Proportional to 20,882.12, 31,323.12 and 5,299.70

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Solution

The fourth proportional to 20,882.12, 31,323.12 and 5,299.70 is: 7,949.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.12 : 31,323.12 = 5,299.70 : x
  2. Step 2: Convert to fraction form
    20,882.12/31,323.12 = 5,299.70/x
  3. Step 3: Cross multiply
    20,882.12x = 31,323.12 × 5,299.70
  4. Step 4: Simplify right side
    20,882.12x = 166,003,139.06
  5. Step 5: Solve for x
    x = 166,003,139.06/20,882.12
  6. Step 6: Final answer
    x = 7,949.53

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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.