Home / 21,202.20-31,803.30-7,352.60

Finding the Fourth Proportional to 21,202.20, 31,803.30 and 7,352.60

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Solution

The fourth proportional to 21,202.20, 31,803.30 and 7,352.60 is: 11,028.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,202.20 : 31,803.30 = 7,352.60 : x
  2. Step 2: Convert to fraction form
    21,202.20/31,803.30 = 7,352.60/x
  3. Step 3: Cross multiply
    21,202.20x = 31,803.30 × 7,352.60
  4. Step 4: Simplify right side
    21,202.20x = 233,836,943.58
  5. Step 5: Solve for x
    x = 233,836,943.58/21,202.20
  6. Step 6: Final answer
    x = 11,028.90

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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.