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Finding the Fourth Proportional to 27,909.96, 41,827.91 and 20,479.65

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Solution

The fourth proportional to 27,909.96, 41,827.91 and 20,479.65 is: 30,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,909.96 : 41,827.91 = 20,479.65 : x
  2. Step 2: Convert to fraction form
    27,909.96/41,827.91 = 20,479.65/x
  3. Step 3: Cross multiply
    27,909.96x = 41,827.91 × 20,479.65
  4. Step 4: Simplify right side
    27,909.96x = 856,620,854.63
  5. Step 5: Solve for x
    x = 856,620,854.63/27,909.96
  6. Step 6: Final answer
    x = 30,692.30

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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.