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Finding the Fourth Proportional to 36,989.70, 55,448.10 and 18,254.40

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Solution

The fourth proportional to 36,989.70, 55,448.10 and 18,254.40 is: 27,363.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,989.70 : 55,448.10 = 18,254.40 : x
  2. Step 2: Convert to fraction form
    36,989.70/55,448.10 = 18,254.40/x
  3. Step 3: Cross multiply
    36,989.70x = 55,448.10 × 18,254.40
  4. Step 4: Simplify right side
    36,989.70x = 1,012,171,796.64
  5. Step 5: Solve for x
    x = 1,012,171,796.64/36,989.70
  6. Step 6: Final answer
    x = 27,363.61

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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.