Home / 21,217.28-31,834.92-11,354

Finding the Fourth Proportional to 21,217.28, 31,834.92 and 11,354

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Solution

The fourth proportional to 21,217.28, 31,834.92 and 11,354 is: 17,035.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.28 : 31,834.92 = 11,354 : x
  2. Step 2: Convert to fraction form
    21,217.28/31,834.92 = 11,354/x
  3. Step 3: Cross multiply
    21,217.28x = 31,834.92 × 11,354
  4. Step 4: Simplify right side
    21,217.28x = 361,453,681.68
  5. Step 5: Solve for x
    x = 361,453,681.68/21,217.28
  6. Step 6: Final answer
    x = 17,035.82

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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.