Home / 18,928.43-28,371.12-11,516.56

Finding the Fourth Proportional to 18,928.43, 28,371.12 and 11,516.56

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Solution

The fourth proportional to 18,928.43, 28,371.12 and 11,516.56 is: 17,261.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928.43 : 28,371.12 = 11,516.56 : x
  2. Step 2: Convert to fraction form
    18,928.43/28,371.12 = 11,516.56/x
  3. Step 3: Cross multiply
    18,928.43x = 28,371.12 × 11,516.56
  4. Step 4: Simplify right side
    18,928.43x = 326,737,563.89
  5. Step 5: Solve for x
    x = 326,737,563.89/18,928.43
  6. Step 6: Final answer
    x = 17,261.74

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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.