Home / 11,989.16-17,983.10-3,669.18

Finding the Fourth Proportional to 11,989.16, 17,983.10 and 3,669.18

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Solution

The fourth proportional to 11,989.16, 17,983.10 and 3,669.18 is: 5,503.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.16 : 17,983.10 = 3,669.18 : x
  2. Step 2: Convert to fraction form
    11,989.16/17,983.10 = 3,669.18/x
  3. Step 3: Cross multiply
    11,989.16x = 17,983.10 × 3,669.18
  4. Step 4: Simplify right side
    11,989.16x = 65,983,212.51
  5. Step 5: Solve for x
    x = 65,983,212.51/11,989.16
  6. Step 6: Final answer
    x = 5,503.57

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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.