Home / 13,872.81-19,144.44-7,904.49

Finding the Fourth Proportional to 13,872.81, 19,144.44 and 7,904.49

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Solution

The fourth proportional to 13,872.81, 19,144.44 and 7,904.49 is: 10,908.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.81 : 19,144.44 = 7,904.49 : x
  2. Step 2: Convert to fraction form
    13,872.81/19,144.44 = 7,904.49/x
  3. Step 3: Cross multiply
    13,872.81x = 19,144.44 × 7,904.49
  4. Step 4: Simplify right side
    13,872.81x = 151,327,034.54
  5. Step 5: Solve for x
    x = 151,327,034.54/13,872.81
  6. Step 6: Final answer
    x = 10,908.17

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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.