Home / 12,439.74-18,660.98-3,674.66

Finding the Fourth Proportional to 12,439.74, 18,660.98 and 3,674.66

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Solution

The fourth proportional to 12,439.74, 18,660.98 and 3,674.66 is: 5,512.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.74 : 18,660.98 = 3,674.66 : x
  2. Step 2: Convert to fraction form
    12,439.74/18,660.98 = 3,674.66/x
  3. Step 3: Cross multiply
    12,439.74x = 18,660.98 × 3,674.66
  4. Step 4: Simplify right side
    12,439.74x = 68,572,645.09
  5. Step 5: Solve for x
    x = 68,572,645.09/12,439.74
  6. Step 6: Final answer
    x = 5,512.39

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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.