Home / 13,872.62-19,142.24-7,904.54

Finding the Fourth Proportional to 13,872.62, 19,142.24 and 7,904.54

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Solution

The fourth proportional to 13,872.62, 19,142.24 and 7,904.54 is: 10,907.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.62 : 19,142.24 = 7,904.54 : x
  2. Step 2: Convert to fraction form
    13,872.62/19,142.24 = 7,904.54/x
  3. Step 3: Cross multiply
    13,872.62x = 19,142.24 × 7,904.54
  4. Step 4: Simplify right side
    13,872.62x = 151,310,601.77
  5. Step 5: Solve for x
    x = 151,310,601.77/13,872.62
  6. Step 6: Final answer
    x = 10,907.14

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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.