Home / 21,976.20-32,905.98-15,405.48

Finding the Fourth Proportional to 21,976.20, 32,905.98 and 15,405.48

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Solution

The fourth proportional to 21,976.20, 32,905.98 and 15,405.48 is: 23,067.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,976.20 : 32,905.98 = 15,405.48 : x
  2. Step 2: Convert to fraction form
    21,976.20/32,905.98 = 15,405.48/x
  3. Step 3: Cross multiply
    21,976.20x = 32,905.98 × 15,405.48
  4. Step 4: Simplify right side
    21,976.20x = 506,932,416.77
  5. Step 5: Solve for x
    x = 506,932,416.77/21,976.20
  6. Step 6: Final answer
    x = 23,067.34

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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.