Home / 20,882.19-31,323.42-5,299.86

Finding the Fourth Proportional to 20,882.19, 31,323.42 and 5,299.86

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Solution

The fourth proportional to 20,882.19, 31,323.42 and 5,299.86 is: 7,949.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.19 : 31,323.42 = 5,299.86 : x
  2. Step 2: Convert to fraction form
    20,882.19/31,323.42 = 5,299.86/x
  3. Step 3: Cross multiply
    20,882.19x = 31,323.42 × 5,299.86
  4. Step 4: Simplify right side
    20,882.19x = 166,009,740.72
  5. Step 5: Solve for x
    x = 166,009,740.72/20,882.19
  6. Step 6: Final answer
    x = 7,949.82

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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.