Home / 21,975.10-30,324.99-12,415.44

Finding the Fourth Proportional to 21,975.10, 30,324.99 and 12,415.44

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Solution

The fourth proportional to 21,975.10, 30,324.99 and 12,415.44 is: 17,132.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,975.10 : 30,324.99 = 12,415.44 : x
  2. Step 2: Convert to fraction form
    21,975.10/30,324.99 = 12,415.44/x
  3. Step 3: Cross multiply
    21,975.10x = 30,324.99 × 12,415.44
  4. Step 4: Simplify right side
    21,975.10x = 376,498,093.85
  5. Step 5: Solve for x
    x = 376,498,093.85/21,975.10
  6. Step 6: Final answer
    x = 17,132.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.