Home / 13,947.57-20,921.36-3,559.32

Finding the Fourth Proportional to 13,947.57, 20,921.36 and 3,559.32

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Solution

The fourth proportional to 13,947.57, 20,921.36 and 3,559.32 is: 5,338.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.57 : 20,921.36 = 3,559.32 : x
  2. Step 2: Convert to fraction form
    13,947.57/20,921.36 = 3,559.32/x
  3. Step 3: Cross multiply
    13,947.57x = 20,921.36 × 3,559.32
  4. Step 4: Simplify right side
    13,947.57x = 74,465,797.28
  5. Step 5: Solve for x
    x = 74,465,797.28/13,947.57
  6. Step 6: Final answer
    x = 5,338.98

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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.