Home / 10,138.22-15,206.88-3,117.96

Finding the Fourth Proportional to 10,138.22, 15,206.88 and 3,117.96

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Solution

The fourth proportional to 10,138.22, 15,206.88 and 3,117.96 is: 4,676.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,138.22 : 15,206.88 = 3,117.96 : x
  2. Step 2: Convert to fraction form
    10,138.22/15,206.88 = 3,117.96/x
  3. Step 3: Cross multiply
    10,138.22x = 15,206.88 × 3,117.96
  4. Step 4: Simplify right side
    10,138.22x = 47,414,443.56
  5. Step 5: Solve for x
    x = 47,414,443.56/10,138.22
  6. Step 6: Final answer
    x = 4,676.80

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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.