Home / 18,928.68-28,371.50-11,516.81

Finding the Fourth Proportional to 18,928.68, 28,371.50 and 11,516.81

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Solution

The fourth proportional to 18,928.68, 28,371.50 and 11,516.81 is: 17,262.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928.68 : 28,371.50 = 11,516.81 : x
  2. Step 2: Convert to fraction form
    18,928.68/28,371.50 = 11,516.81/x
  3. Step 3: Cross multiply
    18,928.68x = 28,371.50 × 11,516.81
  4. Step 4: Simplify right side
    18,928.68x = 326,748,975.47
  5. Step 5: Solve for x
    x = 326,748,975.47/18,928.68
  6. Step 6: Final answer
    x = 17,262.11

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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.