Home / 20,083.40-27,715.30-11,131.08

Finding the Fourth Proportional to 20,083.40, 27,715.30 and 11,131.08

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Solution

The fourth proportional to 20,083.40, 27,715.30 and 11,131.08 is: 15,361.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,083.40 : 27,715.30 = 11,131.08 : x
  2. Step 2: Convert to fraction form
    20,083.40/27,715.30 = 11,131.08/x
  3. Step 3: Cross multiply
    20,083.40x = 27,715.30 × 11,131.08
  4. Step 4: Simplify right side
    20,083.40x = 308,501,221.52
  5. Step 5: Solve for x
    x = 308,501,221.52/20,083.40
  6. Step 6: Final answer
    x = 15,361.01

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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.