Home / 11,287.96-16,928.39-4,712.78

Finding the Fourth Proportional to 11,287.96, 16,928.39 and 4,712.78

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Solution

The fourth proportional to 11,287.96, 16,928.39 and 4,712.78 is: 7,067.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,287.96 : 16,928.39 = 4,712.78 : x
  2. Step 2: Convert to fraction form
    11,287.96/16,928.39 = 4,712.78/x
  3. Step 3: Cross multiply
    11,287.96x = 16,928.39 × 4,712.78
  4. Step 4: Simplify right side
    11,287.96x = 79,779,831.93
  5. Step 5: Solve for x
    x = 79,779,831.93/11,287.96
  6. Step 6: Final answer
    x = 7,067.69

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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.