Home / 21,493.24-32,243.10-7,639

Finding the Fourth Proportional to 21,493.24, 32,243.10 and 7,639

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Solution

The fourth proportional to 21,493.24, 32,243.10 and 7,639 is: 11,459.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,493.24 : 32,243.10 = 7,639 : x
  2. Step 2: Convert to fraction form
    21,493.24/32,243.10 = 7,639/x
  3. Step 3: Cross multiply
    21,493.24x = 32,243.10 × 7,639
  4. Step 4: Simplify right side
    21,493.24x = 246,305,040.90
  5. Step 5: Solve for x
    x = 246,305,040.90/21,493.24
  6. Step 6: Final answer
    x = 11,459.65

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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.