Home / 21,578.72-32,296.80-15,241.28

Finding the Fourth Proportional to 21,578.72, 32,296.80 and 15,241.28

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Solution

The fourth proportional to 21,578.72, 32,296.80 and 15,241.28 is: 22,811.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,578.72 : 32,296.80 = 15,241.28 : x
  2. Step 2: Convert to fraction form
    21,578.72/32,296.80 = 15,241.28/x
  3. Step 3: Cross multiply
    21,578.72x = 32,296.80 × 15,241.28
  4. Step 4: Simplify right side
    21,578.72x = 492,244,571.90
  5. Step 5: Solve for x
    x = 492,244,571.90/21,578.72
  6. Step 6: Final answer
    x = 22,811.57

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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.