Home / 12,213.36-16,854.55-7,177.69

Finding the Fourth Proportional to 12,213.36, 16,854.55 and 7,177.69

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Solution

The fourth proportional to 12,213.36, 16,854.55 and 7,177.69 is: 9,905.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.36 : 16,854.55 = 7,177.69 : x
  2. Step 2: Convert to fraction form
    12,213.36/16,854.55 = 7,177.69/x
  3. Step 3: Cross multiply
    12,213.36x = 16,854.55 × 7,177.69
  4. Step 4: Simplify right side
    12,213.36x = 120,976,734.99
  5. Step 5: Solve for x
    x = 120,976,734.99/12,213.36
  6. Step 6: Final answer
    x = 9,905.28

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Half scale
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Double scale
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Similar ratio
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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.