Home / 21,148.44-29,171.61-13,604.59

Finding the Fourth Proportional to 21,148.44, 29,171.61 and 13,604.59

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Solution

The fourth proportional to 21,148.44, 29,171.61 and 13,604.59 is: 18,765.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,148.44 : 29,171.61 = 13,604.59 : x
  2. Step 2: Convert to fraction form
    21,148.44/29,171.61 = 13,604.59/x
  3. Step 3: Cross multiply
    21,148.44x = 29,171.61 × 13,604.59
  4. Step 4: Simplify right side
    21,148.44x = 396,867,793.69
  5. Step 5: Solve for x
    x = 396,867,793.69/21,148.44
  6. Step 6: Final answer
    x = 18,765.82

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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.