Home / 28,748.46-39,671.91-16,170.78

Finding the Fourth Proportional to 28,748.46, 39,671.91 and 16,170.78

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Solution

The fourth proportional to 28,748.46, 39,671.91 and 16,170.78 is: 22,315.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,748.46 : 39,671.91 = 16,170.78 : x
  2. Step 2: Convert to fraction form
    28,748.46/39,671.91 = 16,170.78/x
  3. Step 3: Cross multiply
    28,748.46x = 39,671.91 × 16,170.78
  4. Step 4: Simplify right side
    28,748.46x = 641,525,728.79
  5. Step 5: Solve for x
    x = 641,525,728.79/28,748.46
  6. Step 6: Final answer
    x = 22,315.13

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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.