Home / 13,947.56-20,921.32-3,559.31

Finding the Fourth Proportional to 13,947.56, 20,921.32 and 3,559.31

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Solution

The fourth proportional to 13,947.56, 20,921.32 and 3,559.31 is: 5,338.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.56 : 20,921.32 = 3,559.31 : x
  2. Step 2: Convert to fraction form
    13,947.56/20,921.32 = 3,559.31/x
  3. Step 3: Cross multiply
    13,947.56x = 20,921.32 × 3,559.31
  4. Step 4: Simplify right side
    13,947.56x = 74,465,341.09
  5. Step 5: Solve for x
    x = 74,465,341.09/13,947.56
  6. Step 6: Final answer
    x = 5,338.95

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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.