Home / 20,948.97-28,910.75-11,519.49

Finding the Fourth Proportional to 20,948.97, 28,910.75 and 11,519.49

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Solution

The fourth proportional to 20,948.97, 28,910.75 and 11,519.49 is: 15,897.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.97 : 28,910.75 = 11,519.49 : x
  2. Step 2: Convert to fraction form
    20,948.97/28,910.75 = 11,519.49/x
  3. Step 3: Cross multiply
    20,948.97x = 28,910.75 × 11,519.49
  4. Step 4: Simplify right side
    20,948.97x = 333,037,037.92
  5. Step 5: Solve for x
    x = 333,037,037.92/20,948.97
  6. Step 6: Final answer
    x = 15,897.54

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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.