Home / 13,311.80-19,943.70-7,760.60

Finding the Fourth Proportional to 13,311.80, 19,943.70 and 7,760.60

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Solution

The fourth proportional to 13,311.80, 19,943.70 and 7,760.60 is: 11,626.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.80 : 19,943.70 = 7,760.60 : x
  2. Step 2: Convert to fraction form
    13,311.80/19,943.70 = 7,760.60/x
  3. Step 3: Cross multiply
    13,311.80x = 19,943.70 × 7,760.60
  4. Step 4: Simplify right side
    13,311.80x = 154,775,078.22
  5. Step 5: Solve for x
    x = 154,775,078.22/13,311.80
  6. Step 6: Final answer
    x = 11,626.91

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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.