Home / 12,520.87-17,186.76-11,072.86

Finding the Fourth Proportional to 12,520.87, 17,186.76 and 11,072.86

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Solution

The fourth proportional to 12,520.87, 17,186.76 and 11,072.86 is: 15,199.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.87 : 17,186.76 = 11,072.86 : x
  2. Step 2: Convert to fraction form
    12,520.87/17,186.76 = 11,072.86/x
  3. Step 3: Cross multiply
    12,520.87x = 17,186.76 × 11,072.86
  4. Step 4: Simplify right side
    12,520.87x = 190,306,544.37
  5. Step 5: Solve for x
    x = 190,306,544.37/12,520.87
  6. Step 6: Final answer
    x = 15,199.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.