Home / 13,568.72-20,351.03-5,247.69

Finding the Fourth Proportional to 13,568.72, 20,351.03 and 5,247.69

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Solution

The fourth proportional to 13,568.72, 20,351.03 and 5,247.69 is: 7,870.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,568.72 : 20,351.03 = 5,247.69 : x
  2. Step 2: Convert to fraction form
    13,568.72/20,351.03 = 5,247.69/x
  3. Step 3: Cross multiply
    13,568.72x = 20,351.03 × 5,247.69
  4. Step 4: Simplify right side
    13,568.72x = 106,795,870.38
  5. Step 5: Solve for x
    x = 106,795,870.38/13,568.72
  6. Step 6: Final answer
    x = 7,870.74

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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.