Home / 20,658.97-28,509.60-11,227.54

Finding the Fourth Proportional to 20,658.97, 28,509.60 and 11,227.54

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Solution

The fourth proportional to 20,658.97, 28,509.60 and 11,227.54 is: 15,494.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.97 : 28,509.60 = 11,227.54 : x
  2. Step 2: Convert to fraction form
    20,658.97/28,509.60 = 11,227.54/x
  3. Step 3: Cross multiply
    20,658.97x = 28,509.60 × 11,227.54
  4. Step 4: Simplify right side
    20,658.97x = 320,092,531.84
  5. Step 5: Solve for x
    x = 320,092,531.84/20,658.97
  6. Step 6: Final answer
    x = 15,494.12

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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.