Home / 12,395.45-17,105.85-6,730.25

Finding the Fourth Proportional to 12,395.45, 17,105.85 and 6,730.25

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Solution

The fourth proportional to 12,395.45, 17,105.85 and 6,730.25 is: 9,287.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,395.45 : 17,105.85 = 6,730.25 : x
  2. Step 2: Convert to fraction form
    12,395.45/17,105.85 = 6,730.25/x
  3. Step 3: Cross multiply
    12,395.45x = 17,105.85 × 6,730.25
  4. Step 4: Simplify right side
    12,395.45x = 115,126,689.73
  5. Step 5: Solve for x
    x = 115,126,689.73/12,395.45
  6. Step 6: Final answer
    x = 9,287.82

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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.