Home / 13,978.27-20,957.23-6,578.62

Finding the Fourth Proportional to 13,978.27, 20,957.23 and 6,578.62

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Solution

The fourth proportional to 13,978.27, 20,957.23 and 6,578.62 is: 9,863.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,978.27 : 20,957.23 = 6,578.62 : x
  2. Step 2: Convert to fraction form
    13,978.27/20,957.23 = 6,578.62/x
  3. Step 3: Cross multiply
    13,978.27x = 20,957.23 × 6,578.62
  4. Step 4: Simplify right side
    13,978.27x = 137,869,608.25
  5. Step 5: Solve for x
    x = 137,869,608.25/13,978.27
  6. Step 6: Final answer
    x = 9,863.14

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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.