Home / 20,375.14-28,117.67-11,422.64

Finding the Fourth Proportional to 20,375.14, 28,117.67 and 11,422.64

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Solution

The fourth proportional to 20,375.14, 28,117.67 and 11,422.64 is: 15,763.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.14 : 28,117.67 = 11,422.64 : x
  2. Step 2: Convert to fraction form
    20,375.14/28,117.67 = 11,422.64/x
  3. Step 3: Cross multiply
    20,375.14x = 28,117.67 × 11,422.64
  4. Step 4: Simplify right side
    20,375.14x = 321,178,171.15
  5. Step 5: Solve for x
    x = 321,178,171.15/20,375.14
  6. Step 6: Final answer
    x = 15,763.24

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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.