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Finding the Fourth Proportional to 12,220.19, 16,863.87 and 6,631.19

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Solution

The fourth proportional to 12,220.19, 16,863.87 and 6,631.19 is: 9,151.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.19 : 16,863.87 = 6,631.19 : x
  2. Step 2: Convert to fraction form
    12,220.19/16,863.87 = 6,631.19/x
  3. Step 3: Cross multiply
    12,220.19x = 16,863.87 × 6,631.19
  4. Step 4: Simplify right side
    12,220.19x = 111,827,526.11
  5. Step 5: Solve for x
    x = 111,827,526.11/12,220.19
  6. Step 6: Final answer
    x = 9,151.05

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.