Home / 20,181.66-27,853.64-12,115.86

Finding the Fourth Proportional to 20,181.66, 27,853.64 and 12,115.86

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Solution

The fourth proportional to 20,181.66, 27,853.64 and 12,115.86 is: 16,721.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.66 : 27,853.64 = 12,115.86 : x
  2. Step 2: Convert to fraction form
    20,181.66/27,853.64 = 12,115.86/x
  3. Step 3: Cross multiply
    20,181.66x = 27,853.64 × 12,115.86
  4. Step 4: Simplify right side
    20,181.66x = 337,470,802.73
  5. Step 5: Solve for x
    x = 337,470,802.73/20,181.66
  6. Step 6: Final answer
    x = 16,721.66

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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.