Home / 20,117.45-27,755.66-11,618.45

Finding the Fourth Proportional to 20,117.45, 27,755.66 and 11,618.45

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Solution

The fourth proportional to 20,117.45, 27,755.66 and 11,618.45 is: 16,029.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.45 : 27,755.66 = 11,618.45 : x
  2. Step 2: Convert to fraction form
    20,117.45/27,755.66 = 11,618.45/x
  3. Step 3: Cross multiply
    20,117.45x = 27,755.66 × 11,618.45
  4. Step 4: Simplify right side
    20,117.45x = 322,477,747.93
  5. Step 5: Solve for x
    x = 322,477,747.93/20,117.45
  6. Step 6: Final answer
    x = 16,029.75

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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.