Home / 21,155.24-29,190.90-11,723.48

Finding the Fourth Proportional to 21,155.24, 29,190.90 and 11,723.48

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Solution

The fourth proportional to 21,155.24, 29,190.90 and 11,723.48 is: 16,176.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.24 : 29,190.90 = 11,723.48 : x
  2. Step 2: Convert to fraction form
    21,155.24/29,190.90 = 11,723.48/x
  3. Step 3: Cross multiply
    21,155.24x = 29,190.90 × 11,723.48
  4. Step 4: Simplify right side
    21,155.24x = 342,218,932.33
  5. Step 5: Solve for x
    x = 342,218,932.33/21,155.24
  6. Step 6: Final answer
    x = 16,176.56

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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.