Home / 20,964.52-31,446.80-5,169.56

Finding the Fourth Proportional to 20,964.52, 31,446.80 and 5,169.56

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Solution

The fourth proportional to 20,964.52, 31,446.80 and 5,169.56 is: 7,754.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.52 : 31,446.80 = 5,169.56 : x
  2. Step 2: Convert to fraction form
    20,964.52/31,446.80 = 5,169.56/x
  3. Step 3: Cross multiply
    20,964.52x = 31,446.80 × 5,169.56
  4. Step 4: Simplify right side
    20,964.52x = 162,566,119.41
  5. Step 5: Solve for x
    x = 162,566,119.41/20,964.52
  6. Step 6: Final answer
    x = 7,754.34

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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.