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Finding the Fourth Proportional to 19,879.84, 27,425.16 and 12,324.16

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Solution

The fourth proportional to 19,879.84, 27,425.16 and 12,324.16 is: 17,001.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.84 : 27,425.16 = 12,324.16 : x
  2. Step 2: Convert to fraction form
    19,879.84/27,425.16 = 12,324.16/x
  3. Step 3: Cross multiply
    19,879.84x = 27,425.16 × 12,324.16
  4. Step 4: Simplify right side
    19,879.84x = 337,992,059.87
  5. Step 5: Solve for x
    x = 337,992,059.87/19,879.84
  6. Step 6: Final answer
    x = 17,001.75

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1.5x scale

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.