Home / 15,933.38-21,981.75-9,217.76

Finding the Fourth Proportional to 15,933.38, 21,981.75 and 9,217.76

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Solution

The fourth proportional to 15,933.38, 21,981.75 and 9,217.76 is: 12,716.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,933.38 : 21,981.75 = 9,217.76 : x
  2. Step 2: Convert to fraction form
    15,933.38/21,981.75 = 9,217.76/x
  3. Step 3: Cross multiply
    15,933.38x = 21,981.75 × 9,217.76
  4. Step 4: Simplify right side
    15,933.38x = 202,622,495.88
  5. Step 5: Solve for x
    x = 202,622,495.88/15,933.38
  6. Step 6: Final answer
    x = 12,716.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.