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Finding the Fourth Proportional to 18,144.80, 27,233.40 and 15,682.40

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Solution

The fourth proportional to 18,144.80, 27,233.40 and 15,682.40 is: 23,537.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,144.80 : 27,233.40 = 15,682.40 : x
  2. Step 2: Convert to fraction form
    18,144.80/27,233.40 = 15,682.40/x
  3. Step 3: Cross multiply
    18,144.80x = 27,233.40 × 15,682.40
  4. Step 4: Simplify right side
    18,144.80x = 427,085,072.16
  5. Step 5: Solve for x
    x = 427,085,072.16/18,144.80
  6. Step 6: Final answer
    x = 23,537.60

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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.