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Finding the Fourth Proportional to 18,977.44, 26,186.87 and 11,018.11

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Solution

The fourth proportional to 18,977.44, 26,186.87 and 11,018.11 is: 15,203.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,977.44 : 26,186.87 = 11,018.11 : x
  2. Step 2: Convert to fraction form
    18,977.44/26,186.87 = 11,018.11/x
  3. Step 3: Cross multiply
    18,977.44x = 26,186.87 × 11,018.11
  4. Step 4: Simplify right side
    18,977.44x = 288,529,683.28
  5. Step 5: Solve for x
    x = 288,529,683.28/18,977.44
  6. Step 6: Final answer
    x = 15,203.83

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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.