Home / 20,610.91-28,447.31-11,658.79

Finding the Fourth Proportional to 20,610.91, 28,447.31 and 11,658.79

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Solution

The fourth proportional to 20,610.91, 28,447.31 and 11,658.79 is: 16,091.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,610.91 : 28,447.31 = 11,658.79 : x
  2. Step 2: Convert to fraction form
    20,610.91/28,447.31 = 11,658.79/x
  3. Step 3: Cross multiply
    20,610.91x = 28,447.31 × 11,658.79
  4. Step 4: Simplify right side
    20,610.91x = 331,661,155.06
  5. Step 5: Solve for x
    x = 331,661,155.06/20,610.91
  6. Step 6: Final answer
    x = 16,091.53

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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.