Home / 20,676.73-28,534.49-12,723.61

Finding the Fourth Proportional to 20,676.73, 28,534.49 and 12,723.61

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Solution

The fourth proportional to 20,676.73, 28,534.49 and 12,723.61 is: 17,558.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.73 : 28,534.49 = 12,723.61 : x
  2. Step 2: Convert to fraction form
    20,676.73/28,534.49 = 12,723.61/x
  3. Step 3: Cross multiply
    20,676.73x = 28,534.49 × 12,723.61
  4. Step 4: Simplify right side
    20,676.73x = 363,061,722.31
  5. Step 5: Solve for x
    x = 363,061,722.31/20,676.73
  6. Step 6: Final answer
    x = 17,558.95

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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.