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Finding the Fourth Proportional to 18,060.80, 27,091.20 and 17,110.40

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Solution

The fourth proportional to 18,060.80, 27,091.20 and 17,110.40 is: 25,665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,060.80 : 27,091.20 = 17,110.40 : x
  2. Step 2: Convert to fraction form
    18,060.80/27,091.20 = 17,110.40/x
  3. Step 3: Cross multiply
    18,060.80x = 27,091.20 × 17,110.40
  4. Step 4: Simplify right side
    18,060.80x = 463,541,268.48
  5. Step 5: Solve for x
    x = 463,541,268.48/18,060.80
  6. Step 6: Final answer
    x = 25,665.60

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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.