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Finding the Fourth Proportional to 18,170.67, 25,068.56 and 13,922.49

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Solution

The fourth proportional to 18,170.67, 25,068.56 and 13,922.49 is: 19,207.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,170.67 : 25,068.56 = 13,922.49 : x
  2. Step 2: Convert to fraction form
    18,170.67/25,068.56 = 13,922.49/x
  3. Step 3: Cross multiply
    18,170.67x = 25,068.56 × 13,922.49
  4. Step 4: Simplify right side
    18,170.67x = 349,016,706.30
  5. Step 5: Solve for x
    x = 349,016,706.30/18,170.67
  6. Step 6: Final answer
    x = 19,207.70

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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.