Home / 21,331.25-31,986.35-6,536.60

Finding the Fourth Proportional to 21,331.25, 31,986.35 and 6,536.60

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Solution

The fourth proportional to 21,331.25, 31,986.35 and 6,536.60 is: 9,801.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.25 : 31,986.35 = 6,536.60 : x
  2. Step 2: Convert to fraction form
    21,331.25/31,986.35 = 6,536.60/x
  3. Step 3: Cross multiply
    21,331.25x = 31,986.35 × 6,536.60
  4. Step 4: Simplify right side
    21,331.25x = 209,082,107.18
  5. Step 5: Solve for x
    x = 209,082,107.18/21,331.25
  6. Step 6: Final answer
    x = 9,801.68

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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.