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Finding the Fourth Proportional to 11,359.76, 17,039.40 and 3,039.78

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Solution

The fourth proportional to 11,359.76, 17,039.40 and 3,039.78 is: 4,559.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,359.76 : 17,039.40 = 3,039.78 : x
  2. Step 2: Convert to fraction form
    11,359.76/17,039.40 = 3,039.78/x
  3. Step 3: Cross multiply
    11,359.76x = 17,039.40 × 3,039.78
  4. Step 4: Simplify right side
    11,359.76x = 51,795,996.81
  5. Step 5: Solve for x
    x = 51,795,996.81/11,359.76
  6. Step 6: Final answer
    x = 4,559.60

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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.