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Finding the Fourth Proportional to 27,234.29, 40,826.79 and 18,918.20

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Solution

The fourth proportional to 27,234.29, 40,826.79 and 18,918.20 is: 28,360.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,234.29 : 40,826.79 = 18,918.20 : x
  2. Step 2: Convert to fraction form
    27,234.29/40,826.79 = 18,918.20/x
  3. Step 3: Cross multiply
    27,234.29x = 40,826.79 × 18,918.20
  4. Step 4: Simplify right side
    27,234.29x = 772,369,378.58
  5. Step 5: Solve for x
    x = 772,369,378.58/27,234.29
  6. Step 6: Final answer
    x = 28,360.18

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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.