Home / 18,118.56-27,177.69-11,917.74

Finding the Fourth Proportional to 18,118.56, 27,177.69 and 11,917.74

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Solution

The fourth proportional to 18,118.56, 27,177.69 and 11,917.74 is: 17,876.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.56 : 27,177.69 = 11,917.74 : x
  2. Step 2: Convert to fraction form
    18,118.56/27,177.69 = 11,917.74/x
  3. Step 3: Cross multiply
    18,118.56x = 27,177.69 × 11,917.74
  4. Step 4: Simplify right side
    18,118.56x = 323,896,643.22
  5. Step 5: Solve for x
    x = 323,896,643.22/18,118.56
  6. Step 6: Final answer
    x = 17,876.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.