Home / 12,395.25-17,106.36-7,680.45

Finding the Fourth Proportional to 12,395.25, 17,106.36 and 7,680.45

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Solution

The fourth proportional to 12,395.25, 17,106.36 and 7,680.45 is: 10,599.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,395.25 : 17,106.36 = 7,680.45 : x
  2. Step 2: Convert to fraction form
    12,395.25/17,106.36 = 7,680.45/x
  3. Step 3: Cross multiply
    12,395.25x = 17,106.36 × 7,680.45
  4. Step 4: Simplify right side
    12,395.25x = 131,384,542.66
  5. Step 5: Solve for x
    x = 131,384,542.66/12,395.25
  6. Step 6: Final answer
    x = 10,599.59

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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.