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Finding the Fourth Proportional to 18,149.72, 27,069.34 and 15,943.01

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Solution

The fourth proportional to 18,149.72, 27,069.34 and 15,943.01 is: 23,778.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,149.72 : 27,069.34 = 15,943.01 : x
  2. Step 2: Convert to fraction form
    18,149.72/27,069.34 = 15,943.01/x
  3. Step 3: Cross multiply
    18,149.72x = 27,069.34 × 15,943.01
  4. Step 4: Simplify right side
    18,149.72x = 431,566,786.13
  5. Step 5: Solve for x
    x = 431,566,786.13/18,149.72
  6. Step 6: Final answer
    x = 23,778.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.