Home / 20,932.40-31,402.60-6,896.48

Finding the Fourth Proportional to 20,932.40, 31,402.60 and 6,896.48

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Solution

The fourth proportional to 20,932.40, 31,402.60 and 6,896.48 is: 10,346.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.40 : 31,402.60 = 6,896.48 : x
  2. Step 2: Convert to fraction form
    20,932.40/31,402.60 = 6,896.48/x
  3. Step 3: Cross multiply
    20,932.40x = 31,402.60 × 6,896.48
  4. Step 4: Simplify right side
    20,932.40x = 216,567,402.85
  5. Step 5: Solve for x
    x = 216,567,402.85/20,932.40
  6. Step 6: Final answer
    x = 10,346.04

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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.