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Finding the Fourth Proportional to 18,191.79, 27,290.76 and 9,310.98

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Solution

The fourth proportional to 18,191.79, 27,290.76 and 9,310.98 is: 13,968.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191.79 : 27,290.76 = 9,310.98 : x
  2. Step 2: Convert to fraction form
    18,191.79/27,290.76 = 9,310.98/x
  3. Step 3: Cross multiply
    18,191.79x = 27,290.76 × 9,310.98
  4. Step 4: Simplify right side
    18,191.79x = 254,103,720.54
  5. Step 5: Solve for x
    x = 254,103,720.54/18,191.79
  6. Step 6: Final answer
    x = 13,968.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.