Home / 20,374.43-30,564.39-8,690.39

Finding the Fourth Proportional to 20,374.43, 30,564.39 and 8,690.39

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Solution

The fourth proportional to 20,374.43, 30,564.39 and 8,690.39 is: 13,036.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.43 : 30,564.39 = 8,690.39 : x
  2. Step 2: Convert to fraction form
    20,374.43/30,564.39 = 8,690.39/x
  3. Step 3: Cross multiply
    20,374.43x = 30,564.39 × 8,690.39
  4. Step 4: Simplify right side
    20,374.43x = 265,616,469.21
  5. Step 5: Solve for x
    x = 265,616,469.21/20,374.43
  6. Step 6: Final answer
    x = 13,036.76

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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.