Home / 19,921.57-27,491.46-11,860.85

Finding the Fourth Proportional to 19,921.57, 27,491.46 and 11,860.85

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Solution

The fourth proportional to 19,921.57, 27,491.46 and 11,860.85 is: 16,367.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.57 : 27,491.46 = 11,860.85 : x
  2. Step 2: Convert to fraction form
    19,921.57/27,491.46 = 11,860.85/x
  3. Step 3: Cross multiply
    19,921.57x = 27,491.46 × 11,860.85
  4. Step 4: Simplify right side
    19,921.57x = 326,072,083.34
  5. Step 5: Solve for x
    x = 326,072,083.34/19,921.57
  6. Step 6: Final answer
    x = 16,367.79

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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.