Home / 11,067.72-15,288.36-10,280.40

Finding the Fourth Proportional to 11,067.72, 15,288.36 and 10,280.40

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Solution

The fourth proportional to 11,067.72, 15,288.36 and 10,280.40 is: 14,200.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,067.72 : 15,288.36 = 10,280.40 : x
  2. Step 2: Convert to fraction form
    11,067.72/15,288.36 = 10,280.40/x
  3. Step 3: Cross multiply
    11,067.72x = 15,288.36 × 10,280.40
  4. Step 4: Simplify right side
    11,067.72x = 157,170,456.14
  5. Step 5: Solve for x
    x = 157,170,456.14/11,067.72
  6. Step 6: Final answer
    x = 14,200.80

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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.