Home / 18,806.94-28,212.66-5,657.40

Finding the Fourth Proportional to 18,806.94, 28,212.66 and 5,657.40

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Solution

The fourth proportional to 18,806.94, 28,212.66 and 5,657.40 is: 8,486.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,806.94 : 28,212.66 = 5,657.40 : x
  2. Step 2: Convert to fraction form
    18,806.94/28,212.66 = 5,657.40/x
  3. Step 3: Cross multiply
    18,806.94x = 28,212.66 × 5,657.40
  4. Step 4: Simplify right side
    18,806.94x = 159,610,302.68
  5. Step 5: Solve for x
    x = 159,610,302.68/18,806.94
  6. Step 6: Final answer
    x = 8,486.78

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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.