Home / 13,366.67-20,043.25-7,821.68

Finding the Fourth Proportional to 13,366.67, 20,043.25 and 7,821.68

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Solution

The fourth proportional to 13,366.67, 20,043.25 and 7,821.68 is: 11,728.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,366.67 : 20,043.25 = 7,821.68 : x
  2. Step 2: Convert to fraction form
    13,366.67/20,043.25 = 7,821.68/x
  3. Step 3: Cross multiply
    13,366.67x = 20,043.25 × 7,821.68
  4. Step 4: Simplify right side
    13,366.67x = 156,771,767.89
  5. Step 5: Solve for x
    x = 156,771,767.89/13,366.67
  6. Step 6: Final answer
    x = 11,728.56

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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.