Home / 21,961.90-32,930.70-7,163.20

Finding the Fourth Proportional to 21,961.90, 32,930.70 and 7,163.20

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Solution

The fourth proportional to 21,961.90, 32,930.70 and 7,163.20 is: 10,740.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.90 : 32,930.70 = 7,163.20 : x
  2. Step 2: Convert to fraction form
    21,961.90/32,930.70 = 7,163.20/x
  3. Step 3: Cross multiply
    21,961.90x = 32,930.70 × 7,163.20
  4. Step 4: Simplify right side
    21,961.90x = 235,889,190.24
  5. Step 5: Solve for x
    x = 235,889,190.24/21,961.90
  6. Step 6: Final answer
    x = 10,740.84

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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.