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Finding the Fourth Proportional to 12,220.03, 16,863.65 and 6,631.03

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Solution

The fourth proportional to 12,220.03, 16,863.65 and 6,631.03 is: 9,150.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.03 : 16,863.65 = 6,631.03 : x
  2. Step 2: Convert to fraction form
    12,220.03/16,863.65 = 6,631.03/x
  3. Step 3: Cross multiply
    12,220.03x = 16,863.65 × 6,631.03
  4. Step 4: Simplify right side
    12,220.03x = 111,823,251.59
  5. Step 5: Solve for x
    x = 111,823,251.59/12,220.03
  6. Step 6: Final answer
    x = 9,150.82

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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.