Home / 10,078.40-15,115.90-2,682.96

Finding the Fourth Proportional to 10,078.40, 15,115.90 and 2,682.96

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Solution

The fourth proportional to 10,078.40, 15,115.90 and 2,682.96 is: 4,023.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,078.40 : 15,115.90 = 2,682.96 : x
  2. Step 2: Convert to fraction form
    10,078.40/15,115.90 = 2,682.96/x
  3. Step 3: Cross multiply
    10,078.40x = 15,115.90 × 2,682.96
  4. Step 4: Simplify right side
    10,078.40x = 40,555,355.06
  5. Step 5: Solve for x
    x = 40,555,355.06/10,078.40
  6. Step 6: Final answer
    x = 4,023.99

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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.