Home / 21,216.28-31,833.42-11,353

Finding the Fourth Proportional to 21,216.28, 31,833.42 and 11,353

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Solution

The fourth proportional to 21,216.28, 31,833.42 and 11,353 is: 17,034.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,216.28 : 31,833.42 = 11,353 : x
  2. Step 2: Convert to fraction form
    21,216.28/31,833.42 = 11,353/x
  3. Step 3: Cross multiply
    21,216.28x = 31,833.42 × 11,353
  4. Step 4: Simplify right side
    21,216.28x = 361,404,817.26
  5. Step 5: Solve for x
    x = 361,404,817.26/21,216.28
  6. Step 6: Final answer
    x = 17,034.32

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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.