Home / 12,395.40-17,105.75-6,730.25

Finding the Fourth Proportional to 12,395.40, 17,105.75 and 6,730.25

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Solution

The fourth proportional to 12,395.40, 17,105.75 and 6,730.25 is: 9,287.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,395.40 : 17,105.75 = 6,730.25 : x
  2. Step 2: Convert to fraction form
    12,395.40/17,105.75 = 6,730.25/x
  3. Step 3: Cross multiply
    12,395.40x = 17,105.75 × 6,730.25
  4. Step 4: Simplify right side
    12,395.40x = 115,125,854.76
  5. Step 5: Solve for x
    x = 115,125,854.76/12,395.40
  6. Step 6: Final answer
    x = 9,287.79

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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.