Home / 11,138.40-15,370.90-6,102.52

Finding the Fourth Proportional to 11,138.40, 15,370.90 and 6,102.52

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Solution

The fourth proportional to 11,138.40, 15,370.90 and 6,102.52 is: 8,421.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.40 : 15,370.90 = 6,102.52 : x
  2. Step 2: Convert to fraction form
    11,138.40/15,370.90 = 6,102.52/x
  3. Step 3: Cross multiply
    11,138.40x = 15,370.90 × 6,102.52
  4. Step 4: Simplify right side
    11,138.40x = 93,801,170.98
  5. Step 5: Solve for x
    x = 93,801,170.98/11,138.40
  6. Step 6: Final answer
    x = 8,421.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.