Home / 20,169.66-27,832.01-11,215.72

Finding the Fourth Proportional to 20,169.66, 27,832.01 and 11,215.72

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Solution

The fourth proportional to 20,169.66, 27,832.01 and 11,215.72 is: 15,476.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.66 : 27,832.01 = 11,215.72 : x
  2. Step 2: Convert to fraction form
    20,169.66/27,832.01 = 11,215.72/x
  3. Step 3: Cross multiply
    20,169.66x = 27,832.01 × 11,215.72
  4. Step 4: Simplify right side
    20,169.66x = 312,156,009.91
  5. Step 5: Solve for x
    x = 312,156,009.91/20,169.66
  6. Step 6: Final answer
    x = 15,476.51

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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.