Home / 13,621.38-20,427.35-6,951.57

Finding the Fourth Proportional to 13,621.38, 20,427.35 and 6,951.57

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Solution

The fourth proportional to 13,621.38, 20,427.35 and 6,951.57 is: 10,424.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.38 : 20,427.35 = 6,951.57 : x
  2. Step 2: Convert to fraction form
    13,621.38/20,427.35 = 6,951.57/x
  3. Step 3: Cross multiply
    13,621.38x = 20,427.35 × 6,951.57
  4. Step 4: Simplify right side
    13,621.38x = 142,002,118.68
  5. Step 5: Solve for x
    x = 142,002,118.68/13,621.38
  6. Step 6: Final answer
    x = 10,424.94

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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.