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Finding the Fourth Proportional to 12,551.60, 18,816.60 and 8,842.16

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Solution

The fourth proportional to 12,551.60, 18,816.60 and 8,842.16 is: 13,255.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.60 : 18,816.60 = 8,842.16 : x
  2. Step 2: Convert to fraction form
    12,551.60/18,816.60 = 8,842.16/x
  3. Step 3: Cross multiply
    12,551.60x = 18,816.60 × 8,842.16
  4. Step 4: Simplify right side
    12,551.60x = 166,379,387.86
  5. Step 5: Solve for x
    x = 166,379,387.86/12,551.60
  6. Step 6: Final answer
    x = 13,255.63

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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.