Home / 21,613.14-32,354.10-20,891.43

Finding the Fourth Proportional to 21,613.14, 32,354.10 and 20,891.43

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Solution

The fourth proportional to 21,613.14, 32,354.10 and 20,891.43 is: 31,273.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,613.14 : 32,354.10 = 20,891.43 : x
  2. Step 2: Convert to fraction form
    21,613.14/32,354.10 = 20,891.43/x
  3. Step 3: Cross multiply
    21,613.14x = 32,354.10 × 20,891.43
  4. Step 4: Simplify right side
    21,613.14x = 675,923,415.36
  5. Step 5: Solve for x
    x = 675,923,415.36/21,613.14
  6. Step 6: Final answer
    x = 31,273.73

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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.