Home / 25,690.14-38,447.73-19,872.72

Finding the Fourth Proportional to 25,690.14, 38,447.73 and 19,872.72

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Solution

The fourth proportional to 25,690.14, 38,447.73 and 19,872.72 is: 29,741.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,690.14 : 38,447.73 = 19,872.72 : x
  2. Step 2: Convert to fraction form
    25,690.14/38,447.73 = 19,872.72/x
  3. Step 3: Cross multiply
    25,690.14x = 38,447.73 × 19,872.72
  4. Step 4: Simplify right side
    25,690.14x = 764,060,972.93
  5. Step 5: Solve for x
    x = 764,060,972.93/25,690.14
  6. Step 6: Final answer
    x = 29,741.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.