Home / 20,270.91-27,972.66-11,318.97

Finding the Fourth Proportional to 20,270.91, 27,972.66 and 11,318.97

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Solution

The fourth proportional to 20,270.91, 27,972.66 and 11,318.97 is: 15,619.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.91 : 27,972.66 = 11,318.97 : x
  2. Step 2: Convert to fraction form
    20,270.91/27,972.66 = 11,318.97/x
  3. Step 3: Cross multiply
    20,270.91x = 27,972.66 × 11,318.97
  4. Step 4: Simplify right side
    20,270.91x = 316,621,783.03
  5. Step 5: Solve for x
    x = 316,621,783.03/20,270.91
  6. Step 6: Final answer
    x = 15,619.52

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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.