Home / 13,105.56-17,983.95-11,917.56

Finding the Fourth Proportional to 13,105.56, 17,983.95 and 11,917.56

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Solution

The fourth proportional to 13,105.56, 17,983.95 and 11,917.56 is: 16,353.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,105.56 : 17,983.95 = 11,917.56 : x
  2. Step 2: Convert to fraction form
    13,105.56/17,983.95 = 11,917.56/x
  3. Step 3: Cross multiply
    13,105.56x = 17,983.95 × 11,917.56
  4. Step 4: Simplify right side
    13,105.56x = 214,324,803.16
  5. Step 5: Solve for x
    x = 214,324,803.16/13,105.56
  6. Step 6: Final answer
    x = 16,353.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.