Home / 11,390.36-17,089.39-7,176.78

Finding the Fourth Proportional to 11,390.36, 17,089.39 and 7,176.78

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Solution

The fourth proportional to 11,390.36, 17,089.39 and 7,176.78 is: 10,767.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.36 : 17,089.39 = 7,176.78 : x
  2. Step 2: Convert to fraction form
    11,390.36/17,089.39 = 7,176.78/x
  3. Step 3: Cross multiply
    11,390.36x = 17,089.39 × 7,176.78
  4. Step 4: Simplify right side
    11,390.36x = 122,646,717.95
  5. Step 5: Solve for x
    x = 122,646,717.95/11,390.36
  6. Step 6: Final answer
    x = 10,767.59

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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.