Home / 28,746.20-39,669.70-16,170.95

Finding the Fourth Proportional to 28,746.20, 39,669.70 and 16,170.95

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Solution

The fourth proportional to 28,746.20, 39,669.70 and 16,170.95 is: 22,315.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,746.20 : 39,669.70 = 16,170.95 : x
  2. Step 2: Convert to fraction form
    28,746.20/39,669.70 = 16,170.95/x
  3. Step 3: Cross multiply
    28,746.20x = 39,669.70 × 16,170.95
  4. Step 4: Simplify right side
    28,746.20x = 641,496,735.22
  5. Step 5: Solve for x
    x = 641,496,735.22/28,746.20
  6. Step 6: Final answer
    x = 22,315.88

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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.