Home / 12,455.44-17,179.70-7,415.75

Finding the Fourth Proportional to 12,455.44, 17,179.70 and 7,415.75

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Solution

The fourth proportional to 12,455.44, 17,179.70 and 7,415.75 is: 10,228.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.44 : 17,179.70 = 7,415.75 : x
  2. Step 2: Convert to fraction form
    12,455.44/17,179.70 = 7,415.75/x
  3. Step 3: Cross multiply
    12,455.44x = 17,179.70 × 7,415.75
  4. Step 4: Simplify right side
    12,455.44x = 127,400,366.15
  5. Step 5: Solve for x
    x = 127,400,366.15/12,455.44
  6. Step 6: Final answer
    x = 10,228.49

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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.