Home / 13,947.05-20,920.57-3,558.80

Finding the Fourth Proportional to 13,947.05, 20,920.57 and 3,558.80

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Solution

The fourth proportional to 13,947.05, 20,920.57 and 3,558.80 is: 5,338.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.05 : 20,920.57 = 3,558.80 : x
  2. Step 2: Convert to fraction form
    13,947.05/20,920.57 = 3,558.80/x
  3. Step 3: Cross multiply
    13,947.05x = 20,920.57 × 3,558.80
  4. Step 4: Simplify right side
    13,947.05x = 74,452,167.92
  5. Step 5: Solve for x
    x = 74,452,167.92/13,947.05
  6. Step 6: Final answer
    x = 5,338.20

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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.