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Finding the Fourth Proportional to 27,289.75, 40,947.59 and 8,821.75

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Solution

The fourth proportional to 27,289.75, 40,947.59 and 8,821.75 is: 13,236.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,289.75 : 40,947.59 = 8,821.75 : x
  2. Step 2: Convert to fraction form
    27,289.75/40,947.59 = 8,821.75/x
  3. Step 3: Cross multiply
    27,289.75x = 40,947.59 × 8,821.75
  4. Step 4: Simplify right side
    27,289.75x = 361,229,402.08
  5. Step 5: Solve for x
    x = 361,229,402.08/27,289.75
  6. Step 6: Final answer
    x = 13,236.82

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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.