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Finding the Fourth Proportional to 16,272.75, 22,456.41 and 8,820.75

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Solution

The fourth proportional to 16,272.75, 22,456.41 and 8,820.75 is: 12,172.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,272.75 : 22,456.41 = 8,820.75 : x
  2. Step 2: Convert to fraction form
    16,272.75/22,456.41 = 8,820.75/x
  3. Step 3: Cross multiply
    16,272.75x = 22,456.41 × 8,820.75
  4. Step 4: Simplify right side
    16,272.75x = 198,082,378.51
  5. Step 5: Solve for x
    x = 198,082,378.51/16,272.75
  6. Step 6: Final answer
    x = 12,172.64

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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.