Home / 20,069.70-27,697.17-12,111.78

Finding the Fourth Proportional to 20,069.70, 27,697.17 and 12,111.78

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Solution

The fourth proportional to 20,069.70, 27,697.17 and 12,111.78 is: 16,714.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,069.70 : 27,697.17 = 12,111.78 : x
  2. Step 2: Convert to fraction form
    20,069.70/27,697.17 = 12,111.78/x
  3. Step 3: Cross multiply
    20,069.70x = 27,697.17 × 12,111.78
  4. Step 4: Simplify right side
    20,069.70x = 335,462,029.66
  5. Step 5: Solve for x
    x = 335,462,029.66/20,069.70
  6. Step 6: Final answer
    x = 16,714.85

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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.