Home / 11,775.18-17,662.77-3,989.46

Finding the Fourth Proportional to 11,775.18, 17,662.77 and 3,989.46

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Solution

The fourth proportional to 11,775.18, 17,662.77 and 3,989.46 is: 5,984.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,775.18 : 17,662.77 = 3,989.46 : x
  2. Step 2: Convert to fraction form
    11,775.18/17,662.77 = 3,989.46/x
  3. Step 3: Cross multiply
    11,775.18x = 17,662.77 × 3,989.46
  4. Step 4: Simplify right side
    11,775.18x = 70,464,914.40
  5. Step 5: Solve for x
    x = 70,464,914.40/11,775.18
  6. Step 6: Final answer
    x = 5,984.19

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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.