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Finding the Fourth Proportional to 18,851.87, 28,279.18 and 6,367.75

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Solution

The fourth proportional to 18,851.87, 28,279.18 and 6,367.75 is: 9,552.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,851.87 : 28,279.18 = 6,367.75 : x
  2. Step 2: Convert to fraction form
    18,851.87/28,279.18 = 6,367.75/x
  3. Step 3: Cross multiply
    18,851.87x = 28,279.18 × 6,367.75
  4. Step 4: Simplify right side
    18,851.87x = 180,074,685.71
  5. Step 5: Solve for x
    x = 180,074,685.71/18,851.87
  6. Step 6: Final answer
    x = 9,552.08

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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.