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Finding the Fourth Proportional to 12,250.56, 16,905.72 and 6,661.56

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Solution

The fourth proportional to 12,250.56, 16,905.72 and 6,661.56 is: 9,192.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,250.56 : 16,905.72 = 6,661.56 : x
  2. Step 2: Convert to fraction form
    12,250.56/16,905.72 = 6,661.56/x
  3. Step 3: Cross multiply
    12,250.56x = 16,905.72 × 6,661.56
  4. Step 4: Simplify right side
    12,250.56x = 112,618,468.12
  5. Step 5: Solve for x
    x = 112,618,468.12/12,250.56
  6. Step 6: Final answer
    x = 9,192.92

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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.