Home / 20,159.27-27,815.24-12,199.80

Finding the Fourth Proportional to 20,159.27, 27,815.24 and 12,199.80

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Solution

The fourth proportional to 20,159.27, 27,815.24 and 12,199.80 is: 16,832.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159.27 : 27,815.24 = 12,199.80 : x
  2. Step 2: Convert to fraction form
    20,159.27/27,815.24 = 12,199.80/x
  3. Step 3: Cross multiply
    20,159.27x = 27,815.24 × 12,199.80
  4. Step 4: Simplify right side
    20,159.27x = 339,340,395.45
  5. Step 5: Solve for x
    x = 339,340,395.45/20,159.27
  6. Step 6: Final answer
    x = 16,832.97

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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.