Home / 20,448.34-28,219.71-11,498.66

Finding the Fourth Proportional to 20,448.34, 28,219.71 and 11,498.66

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Solution

The fourth proportional to 20,448.34, 28,219.71 and 11,498.66 is: 15,868.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.34 : 28,219.71 = 11,498.66 : x
  2. Step 2: Convert to fraction form
    20,448.34/28,219.71 = 11,498.66/x
  3. Step 3: Cross multiply
    20,448.34x = 28,219.71 × 11,498.66
  4. Step 4: Simplify right side
    20,448.34x = 324,488,850.59
  5. Step 5: Solve for x
    x = 324,488,850.59/20,448.34
  6. Step 6: Final answer
    x = 15,868.71

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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.