Home / 20,210.92-27,890.35-11,257.97

Finding the Fourth Proportional to 20,210.92, 27,890.35 and 11,257.97

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Solution

The fourth proportional to 20,210.92, 27,890.35 and 11,257.97 is: 15,535.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.92 : 27,890.35 = 11,257.97 : x
  2. Step 2: Convert to fraction form
    20,210.92/27,890.35 = 11,257.97/x
  3. Step 3: Cross multiply
    20,210.92x = 27,890.35 × 11,257.97
  4. Step 4: Simplify right side
    20,210.92x = 313,988,555.99
  5. Step 5: Solve for x
    x = 313,988,555.99/20,210.92
  6. Step 6: Final answer
    x = 15,535.59

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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.