Home / 18,716.20-28,074.06-5,389.52

Finding the Fourth Proportional to 18,716.20, 28,074.06 and 5,389.52

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Solution

The fourth proportional to 18,716.20, 28,074.06 and 5,389.52 is: 8,084.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,716.20 : 28,074.06 = 5,389.52 : x
  2. Step 2: Convert to fraction form
    18,716.20/28,074.06 = 5,389.52/x
  3. Step 3: Cross multiply
    18,716.20x = 28,074.06 × 5,389.52
  4. Step 4: Simplify right side
    18,716.20x = 151,305,707.85
  5. Step 5: Solve for x
    x = 151,305,707.85/18,716.20
  6. Step 6: Final answer
    x = 8,084.21

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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.