Home / 10,141.20-15,212.88-7,945.92

Finding the Fourth Proportional to 10,141.20, 15,212.88 and 7,945.92

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Solution

The fourth proportional to 10,141.20, 15,212.88 and 7,945.92 is: 11,919.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,141.20 : 15,212.88 = 7,945.92 : x
  2. Step 2: Convert to fraction form
    10,141.20/15,212.88 = 7,945.92/x
  3. Step 3: Cross multiply
    10,141.20x = 15,212.88 × 7,945.92
  4. Step 4: Simplify right side
    10,141.20x = 120,880,327.45
  5. Step 5: Solve for x
    x = 120,880,327.45/10,141.20
  6. Step 6: Final answer
    x = 11,919.73

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1.5x scale

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.