Home / 20,083.88-27,715.34-11,131.31

Finding the Fourth Proportional to 20,083.88, 27,715.34 and 11,131.31

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Solution

The fourth proportional to 20,083.88, 27,715.34 and 11,131.31 is: 15,360.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,083.88 : 27,715.34 = 11,131.31 : x
  2. Step 2: Convert to fraction form
    20,083.88/27,715.34 = 11,131.31/x
  3. Step 3: Cross multiply
    20,083.88x = 27,715.34 × 11,131.31
  4. Step 4: Simplify right side
    20,083.88x = 308,508,041.30
  5. Step 5: Solve for x
    x = 308,508,041.30/20,083.88
  6. Step 6: Final answer
    x = 15,360.98

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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.