Home / 20,085.05-27,716.94-11,132.47

Finding the Fourth Proportional to 20,085.05, 27,716.94 and 11,132.47

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Solution

The fourth proportional to 20,085.05, 27,716.94 and 11,132.47 is: 15,362.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.05 : 27,716.94 = 11,132.47 : x
  2. Step 2: Convert to fraction form
    20,085.05/27,716.94 = 11,132.47/x
  3. Step 3: Cross multiply
    20,085.05x = 27,716.94 × 11,132.47
  4. Step 4: Simplify right side
    20,085.05x = 308,558,037.69
  5. Step 5: Solve for x
    x = 308,558,037.69/20,085.05
  6. Step 6: Final answer
    x = 15,362.57

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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.