Home / 12,777.92-17,634.36-7,112.60

Finding the Fourth Proportional to 12,777.92, 17,634.36 and 7,112.60

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Solution

The fourth proportional to 12,777.92, 17,634.36 and 7,112.60 is: 9,815.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,777.92 : 17,634.36 = 7,112.60 : x
  2. Step 2: Convert to fraction form
    12,777.92/17,634.36 = 7,112.60/x
  3. Step 3: Cross multiply
    12,777.92x = 17,634.36 × 7,112.60
  4. Step 4: Simplify right side
    12,777.92x = 125,426,148.94
  5. Step 5: Solve for x
    x = 125,426,148.94/12,777.92
  6. Step 6: Final answer
    x = 9,815.85

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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.