Home / 11,724.78-16,179.82-6,419.28

Finding the Fourth Proportional to 11,724.78, 16,179.82 and 6,419.28

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Solution

The fourth proportional to 11,724.78, 16,179.82 and 6,419.28 is: 8,858.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,724.78 : 16,179.82 = 6,419.28 : x
  2. Step 2: Convert to fraction form
    11,724.78/16,179.82 = 6,419.28/x
  3. Step 3: Cross multiply
    11,724.78x = 16,179.82 × 6,419.28
  4. Step 4: Simplify right side
    11,724.78x = 103,862,681.93
  5. Step 5: Solve for x
    x = 103,862,681.93/11,724.78
  6. Step 6: Final answer
    x = 8,858.39

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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.