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Finding the Fourth Proportional to 12,220.18, 16,866.48 and 7,441.71

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Solution

The fourth proportional to 12,220.18, 16,866.48 and 7,441.71 is: 10,271.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.18 : 16,866.48 = 7,441.71 : x
  2. Step 2: Convert to fraction form
    12,220.18/16,866.48 = 7,441.71/x
  3. Step 3: Cross multiply
    12,220.18x = 16,866.48 × 7,441.71
  4. Step 4: Simplify right side
    12,220.18x = 125,515,452.88
  5. Step 5: Solve for x
    x = 125,515,452.88/12,220.18
  6. Step 6: Final answer
    x = 10,271.16

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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.