Home / 10,161.60-15,235.20-3,919.20

Finding the Fourth Proportional to 10,161.60, 15,235.20 and 3,919.20

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Solution

The fourth proportional to 10,161.60, 15,235.20 and 3,919.20 is: 5,876.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,161.60 : 15,235.20 = 3,919.20 : x
  2. Step 2: Convert to fraction form
    10,161.60/15,235.20 = 3,919.20/x
  3. Step 3: Cross multiply
    10,161.60x = 15,235.20 × 3,919.20
  4. Step 4: Simplify right side
    10,161.60x = 59,709,795.84
  5. Step 5: Solve for x
    x = 59,709,795.84/10,161.60
  6. Step 6: Final answer
    x = 5,876.02

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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.