Home / 20,257.90-30,390.32-6,929.96

Finding the Fourth Proportional to 20,257.90, 30,390.32 and 6,929.96

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Solution

The fourth proportional to 20,257.90, 30,390.32 and 6,929.96 is: 10,396.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,257.90 : 30,390.32 = 6,929.96 : x
  2. Step 2: Convert to fraction form
    20,257.90/30,390.32 = 6,929.96/x
  3. Step 3: Cross multiply
    20,257.90x = 30,390.32 × 6,929.96
  4. Step 4: Simplify right side
    20,257.90x = 210,603,567.36
  5. Step 5: Solve for x
    x = 210,603,567.36/20,257.90
  6. Step 6: Final answer
    x = 10,396.12

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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.