Home / 22,660.24-33,980.78-12,128

Finding the Fourth Proportional to 22,660.24, 33,980.78 and 12,128

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Solution

The fourth proportional to 22,660.24, 33,980.78 and 12,128 is: 18,186.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,660.24 : 33,980.78 = 12,128 : x
  2. Step 2: Convert to fraction form
    22,660.24/33,980.78 = 12,128/x
  3. Step 3: Cross multiply
    22,660.24x = 33,980.78 × 12,128
  4. Step 4: Simplify right side
    22,660.24x = 412,118,899.84
  5. Step 5: Solve for x
    x = 412,118,899.84/22,660.24
  6. Step 6: Final answer
    x = 18,186.87

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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.