Home / 13,724.28-18,939.46-7,436.64

Finding the Fourth Proportional to 13,724.28, 18,939.46 and 7,436.64

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Solution

The fourth proportional to 13,724.28, 18,939.46 and 7,436.64 is: 10,262.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.28 : 18,939.46 = 7,436.64 : x
  2. Step 2: Convert to fraction form
    13,724.28/18,939.46 = 7,436.64/x
  3. Step 3: Cross multiply
    13,724.28x = 18,939.46 × 7,436.64
  4. Step 4: Simplify right side
    13,724.28x = 140,845,945.81
  5. Step 5: Solve for x
    x = 140,845,945.81/13,724.28
  6. Step 6: Final answer
    x = 10,262.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.