Home / 21,390.97-32,091.91-8,906.84

Finding the Fourth Proportional to 21,390.97, 32,091.91 and 8,906.84

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Solution

The fourth proportional to 21,390.97, 32,091.91 and 8,906.84 is: 13,362.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,390.97 : 32,091.91 = 8,906.84 : x
  2. Step 2: Convert to fraction form
    21,390.97/32,091.91 = 8,906.84/x
  3. Step 3: Cross multiply
    21,390.97x = 32,091.91 × 8,906.84
  4. Step 4: Simplify right side
    21,390.97x = 285,837,507.66
  5. Step 5: Solve for x
    x = 285,837,507.66/21,390.97
  6. Step 6: Final answer
    x = 13,362.53

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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.