Home / 27,876.77-38,469.98-15,940.35

Finding the Fourth Proportional to 27,876.77, 38,469.98 and 15,940.35

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Solution

The fourth proportional to 27,876.77, 38,469.98 and 15,940.35 is: 21,997.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,876.77 : 38,469.98 = 15,940.35 : x
  2. Step 2: Convert to fraction form
    27,876.77/38,469.98 = 15,940.35/x
  3. Step 3: Cross multiply
    27,876.77x = 38,469.98 × 15,940.35
  4. Step 4: Simplify right side
    27,876.77x = 613,224,865.99
  5. Step 5: Solve for x
    x = 613,224,865.99/27,876.77
  6. Step 6: Final answer
    x = 21,997.71

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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.