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Finding the Fourth Proportional to 16,242.76, 22,414.82 and 8,790.76

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Solution

The fourth proportional to 16,242.76, 22,414.82 and 8,790.76 is: 12,131.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,242.76 : 22,414.82 = 8,790.76 : x
  2. Step 2: Convert to fraction form
    16,242.76/22,414.82 = 8,790.76/x
  3. Step 3: Cross multiply
    16,242.76x = 22,414.82 × 8,790.76
  4. Step 4: Simplify right side
    16,242.76x = 197,043,303.06
  5. Step 5: Solve for x
    x = 197,043,303.06/16,242.76
  6. Step 6: Final answer
    x = 12,131.15

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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.