Home / 20,085.44-27,717.90-12,129.62

Finding the Fourth Proportional to 20,085.44, 27,717.90 and 12,129.62

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Solution

The fourth proportional to 20,085.44, 27,717.90 and 12,129.62 is: 16,738.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.44 : 27,717.90 = 12,129.62 : x
  2. Step 2: Convert to fraction form
    20,085.44/27,717.90 = 12,129.62/x
  3. Step 3: Cross multiply
    20,085.44x = 27,717.90 × 12,129.62
  4. Step 4: Simplify right side
    20,085.44x = 336,207,594.20
  5. Step 5: Solve for x
    x = 336,207,594.20/20,085.44
  6. Step 6: Final answer
    x = 16,738.87

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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.