Home / 19,686.62-27,168.17-11,727.74

Finding the Fourth Proportional to 19,686.62, 27,168.17 and 11,727.74

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Solution

The fourth proportional to 19,686.62, 27,168.17 and 11,727.74 is: 16,184.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,686.62 : 27,168.17 = 11,727.74 : x
  2. Step 2: Convert to fraction form
    19,686.62/27,168.17 = 11,727.74/x
  3. Step 3: Cross multiply
    19,686.62x = 27,168.17 × 11,727.74
  4. Step 4: Simplify right side
    19,686.62x = 318,621,039.56
  5. Step 5: Solve for x
    x = 318,621,039.56/19,686.62
  6. Step 6: Final answer
    x = 16,184.65

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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.