Home / 13,883.73-20,821.87-5,117.50

Finding the Fourth Proportional to 13,883.73, 20,821.87 and 5,117.50

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Solution

The fourth proportional to 13,883.73, 20,821.87 and 5,117.50 is: 7,674.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,883.73 : 20,821.87 = 5,117.50 : x
  2. Step 2: Convert to fraction form
    13,883.73/20,821.87 = 5,117.50/x
  3. Step 3: Cross multiply
    13,883.73x = 20,821.87 × 5,117.50
  4. Step 4: Simplify right side
    13,883.73x = 106,555,919.73
  5. Step 5: Solve for x
    x = 106,555,919.73/13,883.73
  6. Step 6: Final answer
    x = 7,674.88

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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.