Home / 11,409.69-17,115.60-3,089.78

Finding the Fourth Proportional to 11,409.69, 17,115.60 and 3,089.78

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Solution

The fourth proportional to 11,409.69, 17,115.60 and 3,089.78 is: 4,634.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,409.69 : 17,115.60 = 3,089.78 : x
  2. Step 2: Convert to fraction form
    11,409.69/17,115.60 = 3,089.78/x
  3. Step 3: Cross multiply
    11,409.69x = 17,115.60 × 3,089.78
  4. Step 4: Simplify right side
    11,409.69x = 52,883,428.76
  5. Step 5: Solve for x
    x = 52,883,428.76/11,409.69
  6. Step 6: Final answer
    x = 4,634.96

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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.