Home / 20,240.79-30,371.50-13,653.17

Finding the Fourth Proportional to 20,240.79, 30,371.50 and 13,653.17

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Solution

The fourth proportional to 20,240.79, 30,371.50 and 13,653.17 is: 20,486.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,240.79 : 30,371.50 = 13,653.17 : x
  2. Step 2: Convert to fraction form
    20,240.79/30,371.50 = 13,653.17/x
  3. Step 3: Cross multiply
    20,240.79x = 30,371.50 × 13,653.17
  4. Step 4: Simplify right side
    20,240.79x = 414,667,134.93
  5. Step 5: Solve for x
    x = 414,667,134.93/20,240.79
  6. Step 6: Final answer
    x = 20,486.71

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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.