Home / 19,921.09-29,872.10-11,603.48

Finding the Fourth Proportional to 19,921.09, 29,872.10 and 11,603.48

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Solution

The fourth proportional to 19,921.09, 29,872.10 and 11,603.48 is: 17,399.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.09 : 29,872.10 = 11,603.48 : x
  2. Step 2: Convert to fraction form
    19,921.09/29,872.10 = 11,603.48/x
  3. Step 3: Cross multiply
    19,921.09x = 29,872.10 × 11,603.48
  4. Step 4: Simplify right side
    19,921.09x = 346,620,194.56
  5. Step 5: Solve for x
    x = 346,620,194.56/19,921.09
  6. Step 6: Final answer
    x = 17,399.66

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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.