Home / 28,146.76-38,839.12-16,213.96

Finding the Fourth Proportional to 28,146.76, 38,839.12 and 16,213.96

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Solution

The fourth proportional to 28,146.76, 38,839.12 and 16,213.96 is: 22,373.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,146.76 : 38,839.12 = 16,213.96 : x
  2. Step 2: Convert to fraction form
    28,146.76/38,839.12 = 16,213.96/x
  3. Step 3: Cross multiply
    28,146.76x = 38,839.12 × 16,213.96
  4. Step 4: Simplify right side
    28,146.76x = 629,735,938.12
  5. Step 5: Solve for x
    x = 629,735,938.12/28,146.76
  6. Step 6: Final answer
    x = 22,373.30

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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.