Home / 21,097.59-29,115.30-11,538.03

Finding the Fourth Proportional to 21,097.59, 29,115.30 and 11,538.03

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Solution

The fourth proportional to 21,097.59, 29,115.30 and 11,538.03 is: 15,922.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,097.59 : 29,115.30 = 11,538.03 : x
  2. Step 2: Convert to fraction form
    21,097.59/29,115.30 = 11,538.03/x
  3. Step 3: Cross multiply
    21,097.59x = 29,115.30 × 11,538.03
  4. Step 4: Simplify right side
    21,097.59x = 335,933,204.86
  5. Step 5: Solve for x
    x = 335,933,204.86/21,097.59
  6. Step 6: Final answer
    x = 15,922.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.