Home / 11,981.37-17,945.89-9,877.75

Finding the Fourth Proportional to 11,981.37, 17,945.89 and 9,877.75

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Solution

The fourth proportional to 11,981.37, 17,945.89 and 9,877.75 is: 14,795.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,981.37 : 17,945.89 = 9,877.75 : x
  2. Step 2: Convert to fraction form
    11,981.37/17,945.89 = 9,877.75/x
  3. Step 3: Cross multiply
    11,981.37x = 17,945.89 × 9,877.75
  4. Step 4: Simplify right side
    11,981.37x = 177,265,014.95
  5. Step 5: Solve for x
    x = 177,265,014.95/11,981.37
  6. Step 6: Final answer
    x = 14,795.05

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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.