Home / 12,151.23-18,222.39-5,909.37

Finding the Fourth Proportional to 12,151.23, 18,222.39 and 5,909.37

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Solution

The fourth proportional to 12,151.23, 18,222.39 and 5,909.37 is: 8,861.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,151.23 : 18,222.39 = 5,909.37 : x
  2. Step 2: Convert to fraction form
    12,151.23/18,222.39 = 5,909.37/x
  3. Step 3: Cross multiply
    12,151.23x = 18,222.39 × 5,909.37
  4. Step 4: Simplify right side
    12,151.23x = 107,682,844.79
  5. Step 5: Solve for x
    x = 107,682,844.79/12,151.23
  6. Step 6: Final answer
    x = 8,861.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.