Home / 13,380.95-20,039.46-7,443.09

Finding the Fourth Proportional to 13,380.95, 20,039.46 and 7,443.09

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Solution

The fourth proportional to 13,380.95, 20,039.46 and 7,443.09 is: 11,146.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.95 : 20,039.46 = 7,443.09 : x
  2. Step 2: Convert to fraction form
    13,380.95/20,039.46 = 7,443.09/x
  3. Step 3: Cross multiply
    13,380.95x = 20,039.46 × 7,443.09
  4. Step 4: Simplify right side
    13,380.95x = 149,155,504.33
  5. Step 5: Solve for x
    x = 149,155,504.33/13,380.95
  6. Step 6: Final answer
    x = 11,146.85

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1.5x scale

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.