Home / 13,311.23-18,369.38-7,261.79

Finding the Fourth Proportional to 13,311.23, 18,369.38 and 7,261.79

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Solution

The fourth proportional to 13,311.23, 18,369.38 and 7,261.79 is: 10,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.23 : 18,369.38 = 7,261.79 : x
  2. Step 2: Convert to fraction form
    13,311.23/18,369.38 = 7,261.79/x
  3. Step 3: Cross multiply
    13,311.23x = 18,369.38 × 7,261.79
  4. Step 4: Simplify right side
    13,311.23x = 133,394,543.68
  5. Step 5: Solve for x
    x = 133,394,543.68/13,311.23
  6. Step 6: Final answer
    x = 10,021.20

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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.