Home / 11,419.71-17,127.47-5,178.21

Finding the Fourth Proportional to 11,419.71, 17,127.47 and 5,178.21

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Solution

The fourth proportional to 11,419.71, 17,127.47 and 5,178.21 is: 7,766.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,419.71 : 17,127.47 = 5,178.21 : x
  2. Step 2: Convert to fraction form
    11,419.71/17,127.47 = 5,178.21/x
  3. Step 3: Cross multiply
    11,419.71x = 17,127.47 × 5,178.21
  4. Step 4: Simplify right side
    11,419.71x = 88,689,629.96
  5. Step 5: Solve for x
    x = 88,689,629.96/11,419.71
  6. Step 6: Final answer
    x = 7,766.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.