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Finding the Fourth Proportional to 12,015.22, 18,022.84 and 8,749.10

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Solution

The fourth proportional to 12,015.22, 18,022.84 and 8,749.10 is: 13,123.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.22 : 18,022.84 = 8,749.10 : x
  2. Step 2: Convert to fraction form
    12,015.22/18,022.84 = 8,749.10/x
  3. Step 3: Cross multiply
    12,015.22x = 18,022.84 × 8,749.10
  4. Step 4: Simplify right side
    12,015.22x = 157,683,629.44
  5. Step 5: Solve for x
    x = 157,683,629.44/12,015.22
  6. Step 6: Final answer
    x = 13,123.66

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.