Home / 10,137.92-15,209.12-3,118.56

Finding the Fourth Proportional to 10,137.92, 15,209.12 and 3,118.56

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Solution

The fourth proportional to 10,137.92, 15,209.12 and 3,118.56 is: 4,678.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,137.92 : 15,209.12 = 3,118.56 : x
  2. Step 2: Convert to fraction form
    10,137.92/15,209.12 = 3,118.56/x
  3. Step 3: Cross multiply
    10,137.92x = 15,209.12 × 3,118.56
  4. Step 4: Simplify right side
    10,137.92x = 47,430,553.27
  5. Step 5: Solve for x
    x = 47,430,553.27/10,137.92
  6. Step 6: Final answer
    x = 4,678.53

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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.