Home / 20,376.23-30,561.07-5,581.69

Finding the Fourth Proportional to 20,376.23, 30,561.07 and 5,581.69

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Solution

The fourth proportional to 20,376.23, 30,561.07 and 5,581.69 is: 8,371.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,376.23 : 30,561.07 = 5,581.69 : x
  2. Step 2: Convert to fraction form
    20,376.23/30,561.07 = 5,581.69/x
  3. Step 3: Cross multiply
    20,376.23x = 30,561.07 × 5,581.69
  4. Step 4: Simplify right side
    20,376.23x = 170,582,390.90
  5. Step 5: Solve for x
    x = 170,582,390.90/20,376.23
  6. Step 6: Final answer
    x = 8,371.64

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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.