Home / 27,811.36-38,380.44-15,876.64

Finding the Fourth Proportional to 27,811.36, 38,380.44 and 15,876.64

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Solution

The fourth proportional to 27,811.36, 38,380.44 and 15,876.64 is: 21,910.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,811.36 : 38,380.44 = 15,876.64 : x
  2. Step 2: Convert to fraction form
    27,811.36/38,380.44 = 15,876.64/x
  3. Step 3: Cross multiply
    27,811.36x = 38,380.44 × 15,876.64
  4. Step 4: Simplify right side
    27,811.36x = 609,352,428.92
  5. Step 5: Solve for x
    x = 609,352,428.92/27,811.36
  6. Step 6: Final answer
    x = 21,910.20

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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.