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Finding the Fourth Proportional to 22,259.70, 33,390.54 and 12,391.56

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Solution

The fourth proportional to 22,259.70, 33,390.54 and 12,391.56 is: 18,587.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,259.70 : 33,390.54 = 12,391.56 : x
  2. Step 2: Convert to fraction form
    22,259.70/33,390.54 = 12,391.56/x
  3. Step 3: Cross multiply
    22,259.70x = 33,390.54 × 12,391.56
  4. Step 4: Simplify right side
    22,259.70x = 413,760,879.84
  5. Step 5: Solve for x
    x = 413,760,879.84/22,259.70
  6. Step 6: Final answer
    x = 18,587.89

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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.