Home / 10,980.87-15,149.85-8,960.73

Finding the Fourth Proportional to 10,980.87, 15,149.85 and 8,960.73

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Solution

The fourth proportional to 10,980.87, 15,149.85 and 8,960.73 is: 12,362.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,980.87 : 15,149.85 = 8,960.73 : x
  2. Step 2: Convert to fraction form
    10,980.87/15,149.85 = 8,960.73/x
  3. Step 3: Cross multiply
    10,980.87x = 15,149.85 × 8,960.73
  4. Step 4: Simplify right side
    10,980.87x = 135,753,715.39
  5. Step 5: Solve for x
    x = 135,753,715.39/10,980.87
  6. Step 6: Final answer
    x = 12,362.75

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1.5x scale

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.