Home / 13,919.78-19,209.36-7,546.38

Finding the Fourth Proportional to 13,919.78, 19,209.36 and 7,546.38

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Solution

The fourth proportional to 13,919.78, 19,209.36 and 7,546.38 is: 10,414.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.78 : 19,209.36 = 7,546.38 : x
  2. Step 2: Convert to fraction form
    13,919.78/19,209.36 = 7,546.38/x
  3. Step 3: Cross multiply
    13,919.78x = 19,209.36 × 7,546.38
  4. Step 4: Simplify right side
    13,919.78x = 144,961,130.12
  5. Step 5: Solve for x
    x = 144,961,130.12/13,919.78
  6. Step 6: Final answer
    x = 10,414.04

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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.