Home / 21,310.13-31,974.41-11,437.88

Finding the Fourth Proportional to 21,310.13, 31,974.41 and 11,437.88

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Solution

The fourth proportional to 21,310.13, 31,974.41 and 11,437.88 is: 17,161.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.13 : 31,974.41 = 11,437.88 : x
  2. Step 2: Convert to fraction form
    21,310.13/31,974.41 = 11,437.88/x
  3. Step 3: Cross multiply
    21,310.13x = 31,974.41 × 11,437.88
  4. Step 4: Simplify right side
    21,310.13x = 365,719,333.37
  5. Step 5: Solve for x
    x = 365,719,333.37/21,310.13
  6. Step 6: Final answer
    x = 17,161.76

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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.