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Finding the Fourth Proportional to 27,788.80, 41,702.40 and 20,003.20

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Solution

The fourth proportional to 27,788.80, 41,702.40 and 20,003.20 is: 30,018.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,788.80 : 41,702.40 = 20,003.20 : x
  2. Step 2: Convert to fraction form
    27,788.80/41,702.40 = 20,003.20/x
  3. Step 3: Cross multiply
    27,788.80x = 41,702.40 × 20,003.20
  4. Step 4: Simplify right side
    27,788.80x = 834,181,447.68
  5. Step 5: Solve for x
    x = 834,181,447.68/27,788.80
  6. Step 6: Final answer
    x = 30,018.62

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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.