Home / 20,284.76-27,992.90-11,209.87

Finding the Fourth Proportional to 20,284.76, 27,992.90 and 11,209.87

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Solution

The fourth proportional to 20,284.76, 27,992.90 and 11,209.87 is: 15,469.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,284.76 : 27,992.90 = 11,209.87 : x
  2. Step 2: Convert to fraction form
    20,284.76/27,992.90 = 11,209.87/x
  3. Step 3: Cross multiply
    20,284.76x = 27,992.90 × 11,209.87
  4. Step 4: Simplify right side
    20,284.76x = 313,796,643.89
  5. Step 5: Solve for x
    x = 313,796,643.89/20,284.76
  6. Step 6: Final answer
    x = 15,469.57

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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.