Home / 21,806.60-32,726.46-15,978.44

Finding the Fourth Proportional to 21,806.60, 32,726.46 and 15,978.44

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Solution

The fourth proportional to 21,806.60, 32,726.46 and 15,978.44 is: 23,979.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,806.60 : 32,726.46 = 15,978.44 : x
  2. Step 2: Convert to fraction form
    21,806.60/32,726.46 = 15,978.44/x
  3. Step 3: Cross multiply
    21,806.60x = 32,726.46 × 15,978.44
  4. Step 4: Simplify right side
    21,806.60x = 522,917,777.52
  5. Step 5: Solve for x
    x = 522,917,777.52/21,806.60
  6. Step 6: Final answer
    x = 23,979.79

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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.