Home / 20,135.92-27,776.66-12,854.44

Finding the Fourth Proportional to 20,135.92, 27,776.66 and 12,854.44

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Solution

The fourth proportional to 20,135.92, 27,776.66 and 12,854.44 is: 17,732.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.92 : 27,776.66 = 12,854.44 : x
  2. Step 2: Convert to fraction form
    20,135.92/27,776.66 = 12,854.44/x
  3. Step 3: Cross multiply
    20,135.92x = 27,776.66 × 12,854.44
  4. Step 4: Simplify right side
    20,135.92x = 357,053,409.37
  5. Step 5: Solve for x
    x = 357,053,409.37/20,135.92
  6. Step 6: Final answer
    x = 17,732.16

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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.