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Finding the Fourth Proportional to 11,615.31, 17,423.93 and 3,718.98

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Solution

The fourth proportional to 11,615.31, 17,423.93 and 3,718.98 is: 5,578.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,615.31 : 17,423.93 = 3,718.98 : x
  2. Step 2: Convert to fraction form
    11,615.31/17,423.93 = 3,718.98/x
  3. Step 3: Cross multiply
    11,615.31x = 17,423.93 × 3,718.98
  4. Step 4: Simplify right side
    11,615.31x = 64,799,247.19
  5. Step 5: Solve for x
    x = 64,799,247.19/11,615.31
  6. Step 6: Final answer
    x = 5,578.78

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.