Home / 13,350.40-20,027.12-3,990.94

Finding the Fourth Proportional to 13,350.40, 20,027.12 and 3,990.94

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Solution

The fourth proportional to 13,350.40, 20,027.12 and 3,990.94 is: 5,986.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,350.40 : 20,027.12 = 3,990.94 : x
  2. Step 2: Convert to fraction form
    13,350.40/20,027.12 = 3,990.94/x
  3. Step 3: Cross multiply
    13,350.40x = 20,027.12 × 3,990.94
  4. Step 4: Simplify right side
    13,350.40x = 79,927,034.29
  5. Step 5: Solve for x
    x = 79,927,034.29/13,350.40
  6. Step 6: Final answer
    x = 5,986.86

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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.