Home / 13,865.74-20,806.79-7,292.43

Finding the Fourth Proportional to 13,865.74, 20,806.79 and 7,292.43

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Solution

The fourth proportional to 13,865.74, 20,806.79 and 7,292.43 is: 10,942.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.74 : 20,806.79 = 7,292.43 : x
  2. Step 2: Convert to fraction form
    13,865.74/20,806.79 = 7,292.43/x
  3. Step 3: Cross multiply
    13,865.74x = 20,806.79 × 7,292.43
  4. Step 4: Simplify right side
    13,865.74x = 151,732,059.60
  5. Step 5: Solve for x
    x = 151,732,059.60/13,865.74
  6. Step 6: Final answer
    x = 10,942.95

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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.