Home / 20,281.96-30,422.47-9,180.61

Finding the Fourth Proportional to 20,281.96, 30,422.47 and 9,180.61

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Solution

The fourth proportional to 20,281.96, 30,422.47 and 9,180.61 is: 13,770.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.96 : 30,422.47 = 9,180.61 : x
  2. Step 2: Convert to fraction form
    20,281.96/30,422.47 = 9,180.61/x
  3. Step 3: Cross multiply
    20,281.96x = 30,422.47 × 9,180.61
  4. Step 4: Simplify right side
    20,281.96x = 279,296,832.31
  5. Step 5: Solve for x
    x = 279,296,832.31/20,281.96
  6. Step 6: Final answer
    x = 13,770.70

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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.