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Finding the Fourth Proportional to 21,879.01, 32,797.27 and 17,425.81

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Solution

The fourth proportional to 21,879.01, 32,797.27 and 17,425.81 is: 26,121.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,879.01 : 32,797.27 = 17,425.81 : x
  2. Step 2: Convert to fraction form
    21,879.01/32,797.27 = 17,425.81/x
  3. Step 3: Cross multiply
    21,879.01x = 32,797.27 × 17,425.81
  4. Step 4: Simplify right side
    21,879.01x = 571,518,995.54
  5. Step 5: Solve for x
    x = 571,518,995.54/21,879.01
  6. Step 6: Final answer
    x = 26,121.79

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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.