Home / 18,514.88-27,778.08-5,369.12

Finding the Fourth Proportional to 18,514.88, 27,778.08 and 5,369.12

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Solution

The fourth proportional to 18,514.88, 27,778.08 and 5,369.12 is: 8,055.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,514.88 : 27,778.08 = 5,369.12 : x
  2. Step 2: Convert to fraction form
    18,514.88/27,778.08 = 5,369.12/x
  3. Step 3: Cross multiply
    18,514.88x = 27,778.08 × 5,369.12
  4. Step 4: Simplify right side
    18,514.88x = 149,143,844.89
  5. Step 5: Solve for x
    x = 149,143,844.89/18,514.88
  6. Step 6: Final answer
    x = 8,055.35

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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.