Home / 8,505.15-12,739.26-4,113.39

Finding the Fourth Proportional to 8,505.15, 12,739.26 and 4,113.39

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Solution

The fourth proportional to 8,505.15, 12,739.26 and 4,113.39 is: 6,161.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,505.15 : 12,739.26 = 4,113.39 : x
  2. Step 2: Convert to fraction form
    8,505.15/12,739.26 = 4,113.39/x
  3. Step 3: Cross multiply
    8,505.15x = 12,739.26 × 4,113.39
  4. Step 4: Simplify right side
    8,505.15x = 52,401,544.69
  5. Step 5: Solve for x
    x = 52,401,544.69/8,505.15
  6. Step 6: Final answer
    x = 6,161.15

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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.