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Finding the Fourth Proportional to 27,012.78, 40,523.22 and 9,479.52

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Solution

The fourth proportional to 27,012.78, 40,523.22 and 9,479.52 is: 14,220.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,012.78 : 40,523.22 = 9,479.52 : x
  2. Step 2: Convert to fraction form
    27,012.78/40,523.22 = 9,479.52/x
  3. Step 3: Cross multiply
    27,012.78x = 40,523.22 × 9,479.52
  4. Step 4: Simplify right side
    27,012.78x = 384,140,674.45
  5. Step 5: Solve for x
    x = 384,140,674.45/27,012.78
  6. Step 6: Final answer
    x = 14,220.70

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.