Home / 13,568.13-18,724.21-7,902.73

Finding the Fourth Proportional to 13,568.13, 18,724.21 and 7,902.73

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Solution

The fourth proportional to 13,568.13, 18,724.21 and 7,902.73 is: 10,905.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,568.13 : 18,724.21 = 7,902.73 : x
  2. Step 2: Convert to fraction form
    13,568.13/18,724.21 = 7,902.73/x
  3. Step 3: Cross multiply
    13,568.13x = 18,724.21 × 7,902.73
  4. Step 4: Simplify right side
    13,568.13x = 147,972,376.09
  5. Step 5: Solve for x
    x = 147,972,376.09/13,568.13
  6. Step 6: Final answer
    x = 10,905.88

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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.