Home / 11,989.84-17,972.60-5,740.69

Finding the Fourth Proportional to 11,989.84, 17,972.60 and 5,740.69

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Solution

The fourth proportional to 11,989.84, 17,972.60 and 5,740.69 is: 8,605.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.84 : 17,972.60 = 5,740.69 : x
  2. Step 2: Convert to fraction form
    11,989.84/17,972.60 = 5,740.69/x
  3. Step 3: Cross multiply
    11,989.84x = 17,972.60 × 5,740.69
  4. Step 4: Simplify right side
    11,989.84x = 103,175,125.09
  5. Step 5: Solve for x
    x = 103,175,125.09/11,989.84
  6. Step 6: Final answer
    x = 8,605.21

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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.