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Finding the Fourth Proportional to 18,003.60, 24,843.84 and 9,936.72

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Solution

The fourth proportional to 18,003.60, 24,843.84 and 9,936.72 is: 13,712.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,003.60 : 24,843.84 = 9,936.72 : x
  2. Step 2: Convert to fraction form
    18,003.60/24,843.84 = 9,936.72/x
  3. Step 3: Cross multiply
    18,003.60x = 24,843.84 × 9,936.72
  4. Step 4: Simplify right side
    18,003.60x = 246,866,281.80
  5. Step 5: Solve for x
    x = 246,866,281.80/18,003.60
  6. Step 6: Final answer
    x = 13,712.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.