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Finding the Fourth Proportional to 18,578.60, 27,867.74 and 4,727.56

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Solution

The fourth proportional to 18,578.60, 27,867.74 and 4,727.56 is: 7,091.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,578.60 : 27,867.74 = 4,727.56 : x
  2. Step 2: Convert to fraction form
    18,578.60/27,867.74 = 4,727.56/x
  3. Step 3: Cross multiply
    18,578.60x = 27,867.74 × 4,727.56
  4. Step 4: Simplify right side
    18,578.60x = 131,746,412.91
  5. Step 5: Solve for x
    x = 131,746,412.91/18,578.60
  6. Step 6: Final answer
    x = 7,091.30

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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.