Home / 20,091.56-27,726.23-11,139.07

Finding the Fourth Proportional to 20,091.56, 27,726.23 and 11,139.07

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Solution

The fourth proportional to 20,091.56, 27,726.23 and 11,139.07 is: 15,371.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.56 : 27,726.23 = 11,139.07 : x
  2. Step 2: Convert to fraction form
    20,091.56/27,726.23 = 11,139.07/x
  3. Step 3: Cross multiply
    20,091.56x = 27,726.23 × 11,139.07
  4. Step 4: Simplify right side
    20,091.56x = 308,844,222.48
  5. Step 5: Solve for x
    x = 308,844,222.48/20,091.56
  6. Step 6: Final answer
    x = 15,371.84

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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.