Home / 18,131.28-27,189.66-5,647.20

Finding the Fourth Proportional to 18,131.28, 27,189.66 and 5,647.20

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Solution

The fourth proportional to 18,131.28, 27,189.66 and 5,647.20 is: 8,468.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,131.28 : 27,189.66 = 5,647.20 : x
  2. Step 2: Convert to fraction form
    18,131.28/27,189.66 = 5,647.20/x
  3. Step 3: Cross multiply
    18,131.28x = 27,189.66 × 5,647.20
  4. Step 4: Simplify right side
    18,131.28x = 153,545,447.95
  5. Step 5: Solve for x
    x = 153,545,447.95/18,131.28
  6. Step 6: Final answer
    x = 8,468.54

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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.