Home / 12,414.28-17,138.34-7,702.60

Finding the Fourth Proportional to 12,414.28, 17,138.34 and 7,702.60

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Solution

The fourth proportional to 12,414.28, 17,138.34 and 7,702.60 is: 10,633.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,414.28 : 17,138.34 = 7,702.60 : x
  2. Step 2: Convert to fraction form
    12,414.28/17,138.34 = 7,702.60/x
  3. Step 3: Cross multiply
    12,414.28x = 17,138.34 × 7,702.60
  4. Step 4: Simplify right side
    12,414.28x = 132,009,777.68
  5. Step 5: Solve for x
    x = 132,009,777.68/12,414.28
  6. Step 6: Final answer
    x = 10,633.70

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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.