Home / 21,851.50-32,776.80-7,072.60

Finding the Fourth Proportional to 21,851.50, 32,776.80 and 7,072.60

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Solution

The fourth proportional to 21,851.50, 32,776.80 and 7,072.60 is: 10,608.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,851.50 : 32,776.80 = 7,072.60 : x
  2. Step 2: Convert to fraction form
    21,851.50/32,776.80 = 7,072.60/x
  3. Step 3: Cross multiply
    21,851.50x = 32,776.80 × 7,072.60
  4. Step 4: Simplify right side
    21,851.50x = 231,817,195.68
  5. Step 5: Solve for x
    x = 231,817,195.68/21,851.50
  6. Step 6: Final answer
    x = 10,608.75

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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.