Home / 20,282.08-27,991.92-11,899.36

Finding the Fourth Proportional to 20,282.08, 27,991.92 and 11,899.36

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Solution

The fourth proportional to 20,282.08, 27,991.92 and 11,899.36 is: 16,422.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,282.08 : 27,991.92 = 11,899.36 : x
  2. Step 2: Convert to fraction form
    20,282.08/27,991.92 = 11,899.36/x
  3. Step 3: Cross multiply
    20,282.08x = 27,991.92 × 11,899.36
  4. Step 4: Simplify right side
    20,282.08x = 333,085,933.17
  5. Step 5: Solve for x
    x = 333,085,933.17/20,282.08
  6. Step 6: Final answer
    x = 16,422.67

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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.