Home / 20,091.24-27,726.30-12,131.78

Finding the Fourth Proportional to 20,091.24, 27,726.30 and 12,131.78

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Solution

The fourth proportional to 20,091.24, 27,726.30 and 12,131.78 is: 16,742.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.24 : 27,726.30 = 12,131.78 : x
  2. Step 2: Convert to fraction form
    20,091.24/27,726.30 = 12,131.78/x
  3. Step 3: Cross multiply
    20,091.24x = 27,726.30 × 12,131.78
  4. Step 4: Simplify right side
    20,091.24x = 336,369,233.18
  5. Step 5: Solve for x
    x = 336,369,233.18/20,091.24
  6. Step 6: Final answer
    x = 16,742.08

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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.