Home / 13,960.80-20,939.40-4,099.74

Finding the Fourth Proportional to 13,960.80, 20,939.40 and 4,099.74

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Solution

The fourth proportional to 13,960.80, 20,939.40 and 4,099.74 is: 6,149.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,960.80 : 20,939.40 = 4,099.74 : x
  2. Step 2: Convert to fraction form
    13,960.80/20,939.40 = 4,099.74/x
  3. Step 3: Cross multiply
    13,960.80x = 20,939.40 × 4,099.74
  4. Step 4: Simplify right side
    13,960.80x = 85,846,095.76
  5. Step 5: Solve for x
    x = 85,846,095.76/13,960.80
  6. Step 6: Final answer
    x = 6,149.08

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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.