Home / 12,100.80-18,148.36-3,665.76

Finding the Fourth Proportional to 12,100.80, 18,148.36 and 3,665.76

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Solution

The fourth proportional to 12,100.80, 18,148.36 and 3,665.76 is: 5,497.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,100.80 : 18,148.36 = 3,665.76 : x
  2. Step 2: Convert to fraction form
    12,100.80/18,148.36 = 3,665.76/x
  3. Step 3: Cross multiply
    12,100.80x = 18,148.36 × 3,665.76
  4. Step 4: Simplify right side
    12,100.80x = 66,527,532.15
  5. Step 5: Solve for x
    x = 66,527,532.15/12,100.80
  6. Step 6: Final answer
    x = 5,497.78

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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.