Home / 20,579.81-30,874.32-6,539.76

Finding the Fourth Proportional to 20,579.81, 30,874.32 and 6,539.76

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Solution

The fourth proportional to 20,579.81, 30,874.32 and 6,539.76 is: 9,811.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.81 : 30,874.32 = 6,539.76 : x
  2. Step 2: Convert to fraction form
    20,579.81/30,874.32 = 6,539.76/x
  3. Step 3: Cross multiply
    20,579.81x = 30,874.32 × 6,539.76
  4. Step 4: Simplify right side
    20,579.81x = 201,910,642.96
  5. Step 5: Solve for x
    x = 201,910,642.96/20,579.81
  6. Step 6: Final answer
    x = 9,811.11

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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.