Home / 15,850.80-21,874.09-8,777.22

Finding the Fourth Proportional to 15,850.80, 21,874.09 and 8,777.22

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Solution

The fourth proportional to 15,850.80, 21,874.09 and 8,777.22 is: 12,112.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,850.80 : 21,874.09 = 8,777.22 : x
  2. Step 2: Convert to fraction form
    15,850.80/21,874.09 = 8,777.22/x
  3. Step 3: Cross multiply
    15,850.80x = 21,874.09 × 8,777.22
  4. Step 4: Simplify right side
    15,850.80x = 191,993,698.92
  5. Step 5: Solve for x
    x = 191,993,698.92/15,850.80
  6. Step 6: Final answer
    x = 12,112.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.