Home / 28,747.20-39,671.07-16,171.95

Finding the Fourth Proportional to 28,747.20, 39,671.07 and 16,171.95

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Solution

The fourth proportional to 28,747.20, 39,671.07 and 16,171.95 is: 22,317.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,747.20 : 39,671.07 = 16,171.95 : x
  2. Step 2: Convert to fraction form
    28,747.20/39,671.07 = 16,171.95/x
  3. Step 3: Cross multiply
    28,747.20x = 39,671.07 × 16,171.95
  4. Step 4: Simplify right side
    28,747.20x = 641,558,560.49
  5. Step 5: Solve for x
    x = 641,558,560.49/28,747.20
  6. Step 6: Final answer
    x = 22,317.25

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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.