Home / 13,947.53-20,921.29-4,086.80

Finding the Fourth Proportional to 13,947.53, 20,921.29 and 4,086.80

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Solution

The fourth proportional to 13,947.53, 20,921.29 and 4,086.80 is: 6,130.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.53 : 20,921.29 = 4,086.80 : x
  2. Step 2: Convert to fraction form
    13,947.53/20,921.29 = 4,086.80/x
  3. Step 3: Cross multiply
    13,947.53x = 20,921.29 × 4,086.80
  4. Step 4: Simplify right side
    13,947.53x = 85,501,127.97
  5. Step 5: Solve for x
    x = 85,501,127.97/13,947.53
  6. Step 6: Final answer
    x = 6,130.20

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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.