Home / 20,118.36-27,764.70-12,160.92

Finding the Fourth Proportional to 20,118.36, 27,764.70 and 12,160.92

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Solution

The fourth proportional to 20,118.36, 27,764.70 and 12,160.92 is: 16,782.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.36 : 27,764.70 = 12,160.92 : x
  2. Step 2: Convert to fraction form
    20,118.36/27,764.70 = 12,160.92/x
  3. Step 3: Cross multiply
    20,118.36x = 27,764.70 × 12,160.92
  4. Step 4: Simplify right side
    20,118.36x = 337,644,295.52
  5. Step 5: Solve for x
    x = 337,644,295.52/20,118.36
  6. Step 6: Final answer
    x = 16,782.89

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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.