Home / 13,882.78-19,147.08-11,721.70

Finding the Fourth Proportional to 13,882.78, 19,147.08 and 11,721.70

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Solution

The fourth proportional to 13,882.78, 19,147.08 and 11,721.70 is: 16,166.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,882.78 : 19,147.08 = 11,721.70 : x
  2. Step 2: Convert to fraction form
    13,882.78/19,147.08 = 11,721.70/x
  3. Step 3: Cross multiply
    13,882.78x = 19,147.08 × 11,721.70
  4. Step 4: Simplify right side
    13,882.78x = 224,436,327.64
  5. Step 5: Solve for x
    x = 224,436,327.64/13,882.78
  6. Step 6: Final answer
    x = 16,166.53

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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.