Home / 20,076.15-27,705.38-12,116.91

Finding the Fourth Proportional to 20,076.15, 27,705.38 and 12,116.91

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Solution

The fourth proportional to 20,076.15, 27,705.38 and 12,116.91 is: 16,721.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,076.15 : 27,705.38 = 12,116.91 : x
  2. Step 2: Convert to fraction form
    20,076.15/27,705.38 = 12,116.91/x
  3. Step 3: Cross multiply
    20,076.15x = 27,705.38 × 12,116.91
  4. Step 4: Simplify right side
    20,076.15x = 335,703,535.39
  5. Step 5: Solve for x
    x = 335,703,535.39/20,076.15
  6. Step 6: Final answer
    x = 16,721.51

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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.