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Finding the Fourth Proportional to 18,860.84, 28,296.07 and 8,863.65

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Solution

The fourth proportional to 18,860.84, 28,296.07 and 8,863.65 is: 13,297.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,860.84 : 28,296.07 = 8,863.65 : x
  2. Step 2: Convert to fraction form
    18,860.84/28,296.07 = 8,863.65/x
  3. Step 3: Cross multiply
    18,860.84x = 28,296.07 × 8,863.65
  4. Step 4: Simplify right side
    18,860.84x = 250,806,460.86
  5. Step 5: Solve for x
    x = 250,806,460.86/18,860.84
  6. Step 6: Final answer
    x = 13,297.74

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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.