Home / 21,771.28-32,631-15,161.68

Finding the Fourth Proportional to 21,771.28, 32,631 and 15,161.68

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Solution

The fourth proportional to 21,771.28, 32,631 and 15,161.68 is: 22,724.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,771.28 : 32,631 = 15,161.68 : x
  2. Step 2: Convert to fraction form
    21,771.28/32,631 = 15,161.68/x
  3. Step 3: Cross multiply
    21,771.28x = 32,631 × 15,161.68
  4. Step 4: Simplify right side
    21,771.28x = 494,740,780.08
  5. Step 5: Solve for x
    x = 494,740,780.08/21,771.28
  6. Step 6: Final answer
    x = 22,724.47

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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.