Home / 20,801.74-28,727.38-13,251.46

Finding the Fourth Proportional to 20,801.74, 28,727.38 and 13,251.46

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Solution

The fourth proportional to 20,801.74, 28,727.38 and 13,251.46 is: 18,300.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.74 : 28,727.38 = 13,251.46 : x
  2. Step 2: Convert to fraction form
    20,801.74/28,727.38 = 13,251.46/x
  3. Step 3: Cross multiply
    20,801.74x = 28,727.38 × 13,251.46
  4. Step 4: Simplify right side
    20,801.74x = 380,679,726.97
  5. Step 5: Solve for x
    x = 380,679,726.97/20,801.74
  6. Step 6: Final answer
    x = 18,300.38

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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.