Home / 20,231.31-27,918.18-12,677.97

Finding the Fourth Proportional to 20,231.31, 27,918.18 and 12,677.97

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Solution

The fourth proportional to 20,231.31, 27,918.18 and 12,677.97 is: 17,494.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.31 : 27,918.18 = 12,677.97 : x
  2. Step 2: Convert to fraction form
    20,231.31/27,918.18 = 12,677.97/x
  3. Step 3: Cross multiply
    20,231.31x = 27,918.18 × 12,677.97
  4. Step 4: Simplify right side
    20,231.31x = 353,945,848.49
  5. Step 5: Solve for x
    x = 353,945,848.49/20,231.31
  6. Step 6: Final answer
    x = 17,494.95

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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.