Home / 12,137.27-18,192.94-8,663.99

Finding the Fourth Proportional to 12,137.27, 18,192.94 and 8,663.99

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Solution

The fourth proportional to 12,137.27, 18,192.94 and 8,663.99 is: 12,986.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,137.27 : 18,192.94 = 8,663.99 : x
  2. Step 2: Convert to fraction form
    12,137.27/18,192.94 = 8,663.99/x
  3. Step 3: Cross multiply
    12,137.27x = 18,192.94 × 8,663.99
  4. Step 4: Simplify right side
    12,137.27x = 157,623,337.61
  5. Step 5: Solve for x
    x = 157,623,337.61/12,137.27
  6. Step 6: Final answer
    x = 12,986.73

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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.