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Finding the Fourth Proportional to 12,127.88, 16,733.94 and 6,822.92

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Solution

The fourth proportional to 12,127.88, 16,733.94 and 6,822.92 is: 9,414.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.88 : 16,733.94 = 6,822.92 : x
  2. Step 2: Convert to fraction form
    12,127.88/16,733.94 = 6,822.92/x
  3. Step 3: Cross multiply
    12,127.88x = 16,733.94 × 6,822.92
  4. Step 4: Simplify right side
    12,127.88x = 114,174,333.90
  5. Step 5: Solve for x
    x = 114,174,333.90/12,127.88
  6. Step 6: Final answer
    x = 9,414.20

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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.