Home / 10,380.92-15,558.42-5,188.28

Finding the Fourth Proportional to 10,380.92, 15,558.42 and 5,188.28

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Solution

The fourth proportional to 10,380.92, 15,558.42 and 5,188.28 is: 7,775.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,380.92 : 15,558.42 = 5,188.28 : x
  2. Step 2: Convert to fraction form
    10,380.92/15,558.42 = 5,188.28/x
  3. Step 3: Cross multiply
    10,380.92x = 15,558.42 × 5,188.28
  4. Step 4: Simplify right side
    10,380.92x = 80,721,439.32
  5. Step 5: Solve for x
    x = 80,721,439.32/10,380.92
  6. Step 6: Final answer
    x = 7,775.94

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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.