Home / 13,278.88-18,326.46-7,976.44

Finding the Fourth Proportional to 13,278.88, 18,326.46 and 7,976.44

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Solution

The fourth proportional to 13,278.88, 18,326.46 and 7,976.44 is: 11,008.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.88 : 18,326.46 = 7,976.44 : x
  2. Step 2: Convert to fraction form
    13,278.88/18,326.46 = 7,976.44/x
  3. Step 3: Cross multiply
    13,278.88x = 18,326.46 × 7,976.44
  4. Step 4: Simplify right side
    13,278.88x = 146,179,908.60
  5. Step 5: Solve for x
    x = 146,179,908.60/13,278.88
  6. Step 6: Final answer
    x = 11,008.45

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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.