Home / 20,135.18-27,782.13-12,177.23

Finding the Fourth Proportional to 20,135.18, 27,782.13 and 12,177.23

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Solution

The fourth proportional to 20,135.18, 27,782.13 and 12,177.23 is: 16,801.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.18 : 27,782.13 = 12,177.23 : x
  2. Step 2: Convert to fraction form
    20,135.18/27,782.13 = 12,177.23/x
  3. Step 3: Cross multiply
    20,135.18x = 27,782.13 × 12,177.23
  4. Step 4: Simplify right side
    20,135.18x = 338,309,456.36
  5. Step 5: Solve for x
    x = 338,309,456.36/20,135.18
  6. Step 6: Final answer
    x = 16,801.91

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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.