Home / 20,473.36-30,717.33-8,780.20

Finding the Fourth Proportional to 20,473.36, 30,717.33 and 8,780.20

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Solution

The fourth proportional to 20,473.36, 30,717.33 and 8,780.20 is: 13,173.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.36 : 30,717.33 = 8,780.20 : x
  2. Step 2: Convert to fraction form
    20,473.36/30,717.33 = 8,780.20/x
  3. Step 3: Cross multiply
    20,473.36x = 30,717.33 × 8,780.20
  4. Step 4: Simplify right side
    20,473.36x = 269,704,191.15
  5. Step 5: Solve for x
    x = 269,704,191.15/20,473.36
  6. Step 6: Final answer
    x = 13,173.42

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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.