Home / 21,756.21-32,638.39-6,961.15

Finding the Fourth Proportional to 21,756.21, 32,638.39 and 6,961.15

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Solution

The fourth proportional to 21,756.21, 32,638.39 and 6,961.15 is: 10,443.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.21 : 32,638.39 = 6,961.15 : x
  2. Step 2: Convert to fraction form
    21,756.21/32,638.39 = 6,961.15/x
  3. Step 3: Cross multiply
    21,756.21x = 32,638.39 × 6,961.15
  4. Step 4: Simplify right side
    21,756.21x = 227,200,728.55
  5. Step 5: Solve for x
    x = 227,200,728.55/21,756.21
  6. Step 6: Final answer
    x = 10,443.03

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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.