Home / 18,505.10-27,761.70-9,149.60

Finding the Fourth Proportional to 18,505.10, 27,761.70 and 9,149.60

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Solution

The fourth proportional to 18,505.10, 27,761.70 and 9,149.60 is: 13,726.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,505.10 : 27,761.70 = 9,149.60 : x
  2. Step 2: Convert to fraction form
    18,505.10/27,761.70 = 9,149.60/x
  3. Step 3: Cross multiply
    18,505.10x = 27,761.70 × 9,149.60
  4. Step 4: Simplify right side
    18,505.10x = 254,008,450.32
  5. Step 5: Solve for x
    x = 254,008,450.32/18,505.10
  6. Step 6: Final answer
    x = 13,726.40

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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.