Home / 11,921.88-17,795.65-11,054.53

Finding the Fourth Proportional to 11,921.88, 17,795.65 and 11,054.53

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Solution

The fourth proportional to 11,921.88, 17,795.65 and 11,054.53 is: 16,500.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.88 : 17,795.65 = 11,054.53 : x
  2. Step 2: Convert to fraction form
    11,921.88/17,795.65 = 11,054.53/x
  3. Step 3: Cross multiply
    11,921.88x = 17,795.65 × 11,054.53
  4. Step 4: Simplify right side
    11,921.88x = 196,722,462.03
  5. Step 5: Solve for x
    x = 196,722,462.03/11,921.88
  6. Step 6: Final answer
    x = 16,500.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.