Home / 15,169.41-20,927.77-9,198.90

Finding the Fourth Proportional to 15,169.41, 20,927.77 and 9,198.90

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Solution

The fourth proportional to 15,169.41, 20,927.77 and 9,198.90 is: 12,690.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,169.41 : 20,927.77 = 9,198.90 : x
  2. Step 2: Convert to fraction form
    15,169.41/20,927.77 = 9,198.90/x
  3. Step 3: Cross multiply
    15,169.41x = 20,927.77 × 9,198.90
  4. Step 4: Simplify right side
    15,169.41x = 192,512,440.46
  5. Step 5: Solve for x
    x = 192,512,440.46/15,169.41
  6. Step 6: Final answer
    x = 12,690.83

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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.