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Finding the Fourth Proportional to 28,323.20, 42,479.12 and 26,918.12

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Solution

The fourth proportional to 28,323.20, 42,479.12 and 26,918.12 is: 40,371.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,323.20 : 42,479.12 = 26,918.12 : x
  2. Step 2: Convert to fraction form
    28,323.20/42,479.12 = 26,918.12/x
  3. Step 3: Cross multiply
    28,323.20x = 42,479.12 × 26,918.12
  4. Step 4: Simplify right side
    28,323.20x = 1,143,458,049.65
  5. Step 5: Solve for x
    x = 1,143,458,049.65/28,323.20
  6. Step 6: Final answer
    x = 40,371.78

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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.