Home / 20,418.06-28,179.99-12,464.91

Finding the Fourth Proportional to 20,418.06, 28,179.99 and 12,464.91

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Solution

The fourth proportional to 20,418.06, 28,179.99 and 12,464.91 is: 17,203.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,418.06 : 28,179.99 = 12,464.91 : x
  2. Step 2: Convert to fraction form
    20,418.06/28,179.99 = 12,464.91/x
  3. Step 3: Cross multiply
    20,418.06x = 28,179.99 × 12,464.91
  4. Step 4: Simplify right side
    20,418.06x = 351,261,039.15
  5. Step 5: Solve for x
    x = 351,261,039.15/20,418.06
  6. Step 6: Final answer
    x = 17,203.45

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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.