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Finding the Fourth Proportional to 11,841.60, 16,612.80 and 11,841.60

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Solution

The fourth proportional to 11,841.60, 16,612.80 and 11,841.60 is: 16,612.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,841.60 : 16,612.80 = 11,841.60 : x
  2. Step 2: Convert to fraction form
    11,841.60/16,612.80 = 11,841.60/x
  3. Step 3: Cross multiply
    11,841.60x = 16,612.80 × 11,841.60
  4. Step 4: Simplify right side
    11,841.60x = 196,722,132.48
  5. Step 5: Solve for x
    x = 196,722,132.48/11,841.60
  6. Step 6: Final answer
    x = 16,612.80

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.