Home / 20,072.94-27,732.15-13,818.66

Finding the Fourth Proportional to 20,072.94, 27,732.15 and 13,818.66

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Solution

The fourth proportional to 20,072.94, 27,732.15 and 13,818.66 is: 19,091.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.94 : 27,732.15 = 13,818.66 : x
  2. Step 2: Convert to fraction form
    20,072.94/27,732.15 = 13,818.66/x
  3. Step 3: Cross multiply
    20,072.94x = 27,732.15 × 13,818.66
  4. Step 4: Simplify right side
    20,072.94x = 383,221,151.92
  5. Step 5: Solve for x
    x = 383,221,151.92/20,072.94
  6. Step 6: Final answer
    x = 19,091.43

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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.