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Finding the Fourth Proportional to 9,873.60, 14,781.60 and 8,836.80

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Solution

The fourth proportional to 9,873.60, 14,781.60 and 8,836.80 is: 13,229.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,873.60 : 14,781.60 = 8,836.80 : x
  2. Step 2: Convert to fraction form
    9,873.60/14,781.60 = 8,836.80/x
  3. Step 3: Cross multiply
    9,873.60x = 14,781.60 × 8,836.80
  4. Step 4: Simplify right side
    9,873.60x = 130,622,042.88
  5. Step 5: Solve for x
    x = 130,622,042.88/9,873.60
  6. Step 6: Final answer
    x = 13,229.42

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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.