Home / 20,619.30-30,930.62-5,828.34

Finding the Fourth Proportional to 20,619.30, 30,930.62 and 5,828.34

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Solution

The fourth proportional to 20,619.30, 30,930.62 and 5,828.34 is: 8,742.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619.30 : 30,930.62 = 5,828.34 : x
  2. Step 2: Convert to fraction form
    20,619.30/30,930.62 = 5,828.34/x
  3. Step 3: Cross multiply
    20,619.30x = 30,930.62 × 5,828.34
  4. Step 4: Simplify right side
    20,619.30x = 180,274,169.77
  5. Step 5: Solve for x
    x = 180,274,169.77/20,619.30
  6. Step 6: Final answer
    x = 8,742.98

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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.