Home / 11,829.78-17,722.80-5,972.40

Finding the Fourth Proportional to 11,829.78, 17,722.80 and 5,972.40

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Solution

The fourth proportional to 11,829.78, 17,722.80 and 5,972.40 is: 8,947.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,829.78 : 17,722.80 = 5,972.40 : x
  2. Step 2: Convert to fraction form
    11,829.78/17,722.80 = 5,972.40/x
  3. Step 3: Cross multiply
    11,829.78x = 17,722.80 × 5,972.40
  4. Step 4: Simplify right side
    11,829.78x = 105,847,650.72
  5. Step 5: Solve for x
    x = 105,847,650.72/11,829.78
  6. Step 6: Final answer
    x = 8,947.56

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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.