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Finding the Fourth Proportional to 17,901.78, 26,851.86 and 6,215.91

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Solution

The fourth proportional to 17,901.78, 26,851.86 and 6,215.91 is: 9,323.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,901.78 : 26,851.86 = 6,215.91 : x
  2. Step 2: Convert to fraction form
    17,901.78/26,851.86 = 6,215.91/x
  3. Step 3: Cross multiply
    17,901.78x = 26,851.86 × 6,215.91
  4. Step 4: Simplify right side
    17,901.78x = 166,908,745.09
  5. Step 5: Solve for x
    x = 166,908,745.09/17,901.78
  6. Step 6: Final answer
    x = 9,323.58

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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.