Home / 13,724.20-18,939.41-7,436.53

Finding the Fourth Proportional to 13,724.20, 18,939.41 and 7,436.53

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Solution

The fourth proportional to 13,724.20, 18,939.41 and 7,436.53 is: 10,262.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.20 : 18,939.41 = 7,436.53 : x
  2. Step 2: Convert to fraction form
    13,724.20/18,939.41 = 7,436.53/x
  3. Step 3: Cross multiply
    13,724.20x = 18,939.41 × 7,436.53
  4. Step 4: Simplify right side
    13,724.20x = 140,843,490.65
  5. Step 5: Solve for x
    x = 140,843,490.65/13,724.20
  6. Step 6: Final answer
    x = 10,262.42

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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.