Home / 13,921.78-19,212-7,634.14

Finding the Fourth Proportional to 13,921.78, 19,212 and 7,634.14

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Solution

The fourth proportional to 13,921.78, 19,212 and 7,634.14 is: 10,535.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.78 : 19,212 = 7,634.14 : x
  2. Step 2: Convert to fraction form
    13,921.78/19,212 = 7,634.14/x
  3. Step 3: Cross multiply
    13,921.78x = 19,212 × 7,634.14
  4. Step 4: Simplify right side
    13,921.78x = 146,667,097.68
  5. Step 5: Solve for x
    x = 146,667,097.68/13,921.78
  6. Step 6: Final answer
    x = 10,535.08

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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.