Home / 13,186.42-18,197.76-7,522.09

Finding the Fourth Proportional to 13,186.42, 18,197.76 and 7,522.09

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Solution

The fourth proportional to 13,186.42, 18,197.76 and 7,522.09 is: 10,380.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.42 : 18,197.76 = 7,522.09 : x
  2. Step 2: Convert to fraction form
    13,186.42/18,197.76 = 7,522.09/x
  3. Step 3: Cross multiply
    13,186.42x = 18,197.76 × 7,522.09
  4. Step 4: Simplify right side
    13,186.42x = 136,885,143.02
  5. Step 5: Solve for x
    x = 136,885,143.02/13,186.42
  6. Step 6: Final answer
    x = 10,380.77

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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.