Home / 20,404.73-28,151.30-13,335.26

Finding the Fourth Proportional to 20,404.73, 28,151.30 and 13,335.26

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Solution

The fourth proportional to 20,404.73, 28,151.30 and 13,335.26 is: 18,397.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.73 : 28,151.30 = 13,335.26 : x
  2. Step 2: Convert to fraction form
    20,404.73/28,151.30 = 13,335.26/x
  3. Step 3: Cross multiply
    20,404.73x = 28,151.30 × 13,335.26
  4. Step 4: Simplify right side
    20,404.73x = 375,404,797.42
  5. Step 5: Solve for x
    x = 375,404,797.42/20,404.73
  6. Step 6: Final answer
    x = 18,397.93

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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.