Home / 20,468.28-30,717-8,784.84

Finding the Fourth Proportional to 20,468.28, 30,717 and 8,784.84

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Solution

The fourth proportional to 20,468.28, 30,717 and 8,784.84 is: 13,183.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,468.28 : 30,717 = 8,784.84 : x
  2. Step 2: Convert to fraction form
    20,468.28/30,717 = 8,784.84/x
  3. Step 3: Cross multiply
    20,468.28x = 30,717 × 8,784.84
  4. Step 4: Simplify right side
    20,468.28x = 269,843,930.28
  5. Step 5: Solve for x
    x = 269,843,930.28/20,468.28
  6. Step 6: Final answer
    x = 13,183.52

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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.