Home / 12,240.78-16,892.24-6,936.61

Finding the Fourth Proportional to 12,240.78, 16,892.24 and 6,936.61

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Solution

The fourth proportional to 12,240.78, 16,892.24 and 6,936.61 is: 9,572.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.78 : 16,892.24 = 6,936.61 : x
  2. Step 2: Convert to fraction form
    12,240.78/16,892.24 = 6,936.61/x
  3. Step 3: Cross multiply
    12,240.78x = 16,892.24 × 6,936.61
  4. Step 4: Simplify right side
    12,240.78x = 117,174,803.99
  5. Step 5: Solve for x
    x = 117,174,803.99/12,240.78
  6. Step 6: Final answer
    x = 9,572.49

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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.