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Finding the Fourth Proportional to 27,809.55, 41,718.39 and 8,085.54

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Solution

The fourth proportional to 27,809.55, 41,718.39 and 8,085.54 is: 12,129.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,809.55 : 41,718.39 = 8,085.54 : x
  2. Step 2: Convert to fraction form
    27,809.55/41,718.39 = 8,085.54/x
  3. Step 3: Cross multiply
    27,809.55x = 41,718.39 × 8,085.54
  4. Step 4: Simplify right side
    27,809.55x = 337,315,711.08
  5. Step 5: Solve for x
    x = 337,315,711.08/27,809.55
  6. Step 6: Final answer
    x = 12,129.49

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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.