Home / 12,711.78-19,067.40-4,391.54

Finding the Fourth Proportional to 12,711.78, 19,067.40 and 4,391.54

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Solution

The fourth proportional to 12,711.78, 19,067.40 and 4,391.54 is: 6,587.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,711.78 : 19,067.40 = 4,391.54 : x
  2. Step 2: Convert to fraction form
    12,711.78/19,067.40 = 4,391.54/x
  3. Step 3: Cross multiply
    12,711.78x = 19,067.40 × 4,391.54
  4. Step 4: Simplify right side
    12,711.78x = 83,735,154.46
  5. Step 5: Solve for x
    x = 83,735,154.46/12,711.78
  6. Step 6: Final answer
    x = 6,587.21

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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.