Home / 20,470.46-30,661.11-12,549.02

Finding the Fourth Proportional to 20,470.46, 30,661.11 and 12,549.02

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Solution

The fourth proportional to 20,470.46, 30,661.11 and 12,549.02 is: 18,796.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.46 : 30,661.11 = 12,549.02 : x
  2. Step 2: Convert to fraction form
    20,470.46/30,661.11 = 12,549.02/x
  3. Step 3: Cross multiply
    20,470.46x = 30,661.11 × 12,549.02
  4. Step 4: Simplify right side
    20,470.46x = 384,766,729.31
  5. Step 5: Solve for x
    x = 384,766,729.31/20,470.46
  6. Step 6: Final answer
    x = 18,796.20

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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.