Home / 20,512.46-30,772.80-6,474.65

Finding the Fourth Proportional to 20,512.46, 30,772.80 and 6,474.65

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Solution

The fourth proportional to 20,512.46, 30,772.80 and 6,474.65 is: 9,713.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.46 : 30,772.80 = 6,474.65 : x
  2. Step 2: Convert to fraction form
    20,512.46/30,772.80 = 6,474.65/x
  3. Step 3: Cross multiply
    20,512.46x = 30,772.80 × 6,474.65
  4. Step 4: Simplify right side
    20,512.46x = 199,242,955.66
  5. Step 5: Solve for x
    x = 199,242,955.66/20,512.46
  6. Step 6: Final answer
    x = 9,713.27

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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.