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Finding the Fourth Proportional to 18,393.94, 27,587.25 and 5,242.78

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Solution

The fourth proportional to 18,393.94, 27,587.25 and 5,242.78 is: 7,863.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.94 : 27,587.25 = 5,242.78 : x
  2. Step 2: Convert to fraction form
    18,393.94/27,587.25 = 5,242.78/x
  3. Step 3: Cross multiply
    18,393.94x = 27,587.25 × 5,242.78
  4. Step 4: Simplify right side
    18,393.94x = 144,633,882.56
  5. Step 5: Solve for x
    x = 144,633,882.56/18,393.94
  6. Step 6: Final answer
    x = 7,863.13

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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.