Home / 10,509.15-15,759.78-3,487.86

Finding the Fourth Proportional to 10,509.15, 15,759.78 and 3,487.86

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Solution

The fourth proportional to 10,509.15, 15,759.78 and 3,487.86 is: 5,230.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,509.15 : 15,759.78 = 3,487.86 : x
  2. Step 2: Convert to fraction form
    10,509.15/15,759.78 = 3,487.86/x
  3. Step 3: Cross multiply
    10,509.15x = 15,759.78 × 3,487.86
  4. Step 4: Simplify right side
    10,509.15x = 54,967,906.27
  5. Step 5: Solve for x
    x = 54,967,906.27/10,509.15
  6. Step 6: Final answer
    x = 5,230.48

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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.