Home / 15,022.80-20,731.77-8,735.22

Finding the Fourth Proportional to 15,022.80, 20,731.77 and 8,735.22

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Solution

The fourth proportional to 15,022.80, 20,731.77 and 8,735.22 is: 12,054.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,022.80 : 20,731.77 = 8,735.22 : x
  2. Step 2: Convert to fraction form
    15,022.80/20,731.77 = 8,735.22/x
  3. Step 3: Cross multiply
    15,022.80x = 20,731.77 × 8,735.22
  4. Step 4: Simplify right side
    15,022.80x = 181,096,571.94
  5. Step 5: Solve for x
    x = 181,096,571.94/15,022.80
  6. Step 6: Final answer
    x = 12,054.78

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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.