Home / 20,260.33-27,967.78-12,305.12

Finding the Fourth Proportional to 20,260.33, 27,967.78 and 12,305.12

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Solution

The fourth proportional to 20,260.33, 27,967.78 and 12,305.12 is: 16,986.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.33 : 27,967.78 = 12,305.12 : x
  2. Step 2: Convert to fraction form
    20,260.33/27,967.78 = 12,305.12/x
  3. Step 3: Cross multiply
    20,260.33x = 27,967.78 × 12,305.12
  4. Step 4: Simplify right side
    20,260.33x = 344,146,764.58
  5. Step 5: Solve for x
    x = 344,146,764.58/20,260.33
  6. Step 6: Final answer
    x = 16,986.24

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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.