Home / 12,015.90-18,013.41-5,772.78

Finding the Fourth Proportional to 12,015.90, 18,013.41 and 5,772.78

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Solution

The fourth proportional to 12,015.90, 18,013.41 and 5,772.78 is: 8,654.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.90 : 18,013.41 = 5,772.78 : x
  2. Step 2: Convert to fraction form
    12,015.90/18,013.41 = 5,772.78/x
  3. Step 3: Cross multiply
    12,015.90x = 18,013.41 × 5,772.78
  4. Step 4: Simplify right side
    12,015.90x = 103,987,452.98
  5. Step 5: Solve for x
    x = 103,987,452.98/12,015.90
  6. Step 6: Final answer
    x = 8,654.15

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1.5x scale

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.