Home / 22,147.20-30,565.44-21,458.88

Finding the Fourth Proportional to 22,147.20, 30,565.44 and 21,458.88

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Solution

The fourth proportional to 22,147.20, 30,565.44 and 21,458.88 is: 29,615.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,147.20 : 30,565.44 = 21,458.88 : x
  2. Step 2: Convert to fraction form
    22,147.20/30,565.44 = 21,458.88/x
  3. Step 3: Cross multiply
    22,147.20x = 30,565.44 × 21,458.88
  4. Step 4: Simplify right side
    22,147.20x = 655,900,109.11
  5. Step 5: Solve for x
    x = 655,900,109.11/22,147.20
  6. Step 6: Final answer
    x = 29,615.49

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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.