Home / 12,778.25-17,634.56-7,113.36

Finding the Fourth Proportional to 12,778.25, 17,634.56 and 7,113.36

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Solution

The fourth proportional to 12,778.25, 17,634.56 and 7,113.36 is: 9,816.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.25 : 17,634.56 = 7,113.36 : x
  2. Step 2: Convert to fraction form
    12,778.25/17,634.56 = 7,113.36/x
  3. Step 3: Cross multiply
    12,778.25x = 17,634.56 × 7,113.36
  4. Step 4: Simplify right side
    12,778.25x = 125,440,973.72
  5. Step 5: Solve for x
    x = 125,440,973.72/12,778.25
  6. Step 6: Final answer
    x = 9,816.76

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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.