Home / 20,118.36-30,168.18-11,800.92

Finding the Fourth Proportional to 20,118.36, 30,168.18 and 11,800.92

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Solution

The fourth proportional to 20,118.36, 30,168.18 and 11,800.92 is: 17,695.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.36 : 30,168.18 = 11,800.92 : x
  2. Step 2: Convert to fraction form
    20,118.36/30,168.18 = 11,800.92/x
  3. Step 3: Cross multiply
    20,118.36x = 30,168.18 × 11,800.92
  4. Step 4: Simplify right side
    20,118.36x = 356,012,278.73
  5. Step 5: Solve for x
    x = 356,012,278.73/20,118.36
  6. Step 6: Final answer
    x = 17,695.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.