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Finding the Fourth Proportional to 27,339.20, 41,008.80 and 20,427.20

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Solution

The fourth proportional to 27,339.20, 41,008.80 and 20,427.20 is: 30,640.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,339.20 : 41,008.80 = 20,427.20 : x
  2. Step 2: Convert to fraction form
    27,339.20/41,008.80 = 20,427.20/x
  3. Step 3: Cross multiply
    27,339.20x = 41,008.80 × 20,427.20
  4. Step 4: Simplify right side
    27,339.20x = 837,694,959.36
  5. Step 5: Solve for x
    x = 837,694,959.36/27,339.20
  6. Step 6: Final answer
    x = 30,640.80

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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.