Home / 25,202.81-34,778.61-13,872.02

Finding the Fourth Proportional to 25,202.81, 34,778.61 and 13,872.02

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Solution

The fourth proportional to 25,202.81, 34,778.61 and 13,872.02 is: 19,142.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,202.81 : 34,778.61 = 13,872.02 : x
  2. Step 2: Convert to fraction form
    25,202.81/34,778.61 = 13,872.02/x
  3. Step 3: Cross multiply
    25,202.81x = 34,778.61 × 13,872.02
  4. Step 4: Simplify right side
    25,202.81x = 482,449,399.60
  5. Step 5: Solve for x
    x = 482,449,399.60/25,202.81
  6. Step 6: Final answer
    x = 19,142.68

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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.