Home / 20,304.38-28,022.48-11,920.88

Finding the Fourth Proportional to 20,304.38, 28,022.48 and 11,920.88

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Solution

The fourth proportional to 20,304.38, 28,022.48 and 11,920.88 is: 16,452.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,304.38 : 28,022.48 = 11,920.88 : x
  2. Step 2: Convert to fraction form
    20,304.38/28,022.48 = 11,920.88/x
  3. Step 3: Cross multiply
    20,304.38x = 28,022.48 × 11,920.88
  4. Step 4: Simplify right side
    20,304.38x = 334,052,421.67
  5. Step 5: Solve for x
    x = 334,052,421.67/20,304.38
  6. Step 6: Final answer
    x = 16,452.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.