Home / 20,993.04-31,467.24-7,839.72

Finding the Fourth Proportional to 20,993.04, 31,467.24 and 7,839.72

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Solution

The fourth proportional to 20,993.04, 31,467.24 and 7,839.72 is: 11,751.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993.04 : 31,467.24 = 7,839.72 : x
  2. Step 2: Convert to fraction form
    20,993.04/31,467.24 = 7,839.72/x
  3. Step 3: Cross multiply
    20,993.04x = 31,467.24 × 7,839.72
  4. Step 4: Simplify right side
    20,993.04x = 246,694,350.77
  5. Step 5: Solve for x
    x = 246,694,350.77/20,993.04
  6. Step 6: Final answer
    x = 11,751.24

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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.