Home / 20,375.81-30,565.07-5,583.48

Finding the Fourth Proportional to 20,375.81, 30,565.07 and 5,583.48

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Solution

The fourth proportional to 20,375.81, 30,565.07 and 5,583.48 is: 8,375.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.81 : 30,565.07 = 5,583.48 : x
  2. Step 2: Convert to fraction form
    20,375.81/30,565.07 = 5,583.48/x
  3. Step 3: Cross multiply
    20,375.81x = 30,565.07 × 5,583.48
  4. Step 4: Simplify right side
    20,375.81x = 170,659,457.04
  5. Step 5: Solve for x
    x = 170,659,457.04/20,375.81
  6. Step 6: Final answer
    x = 8,375.59

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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.