Home / 20,199.15-27,875.97-12,135.27

Finding the Fourth Proportional to 20,199.15, 27,875.97 and 12,135.27

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Solution

The fourth proportional to 20,199.15, 27,875.97 and 12,135.27 is: 16,747.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199.15 : 27,875.97 = 12,135.27 : x
  2. Step 2: Convert to fraction form
    20,199.15/27,875.97 = 12,135.27/x
  3. Step 3: Cross multiply
    20,199.15x = 27,875.97 × 12,135.27
  4. Step 4: Simplify right side
    20,199.15x = 338,282,467.97
  5. Step 5: Solve for x
    x = 338,282,467.97/20,199.15
  6. Step 6: Final answer
    x = 16,747.36

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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.