Home / 20,085.48-27,716.62-11,133.81

Finding the Fourth Proportional to 20,085.48, 27,716.62 and 11,133.81

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Solution

The fourth proportional to 20,085.48, 27,716.62 and 11,133.81 is: 15,363.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.48 : 27,716.62 = 11,133.81 : x
  2. Step 2: Convert to fraction form
    20,085.48/27,716.62 = 11,133.81/x
  3. Step 3: Cross multiply
    20,085.48x = 27,716.62 × 11,133.81
  4. Step 4: Simplify right side
    20,085.48x = 308,591,580.92
  5. Step 5: Solve for x
    x = 308,591,580.92/20,085.48
  6. Step 6: Final answer
    x = 15,363.91

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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.