Home / 21,972.62-30,319.79-12,411.49

Finding the Fourth Proportional to 21,972.62, 30,319.79 and 12,411.49

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Solution

The fourth proportional to 21,972.62, 30,319.79 and 12,411.49 is: 17,126.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.62 : 30,319.79 = 12,411.49 : x
  2. Step 2: Convert to fraction form
    21,972.62/30,319.79 = 12,411.49/x
  3. Step 3: Cross multiply
    21,972.62x = 30,319.79 × 12,411.49
  4. Step 4: Simplify right side
    21,972.62x = 376,313,556.73
  5. Step 5: Solve for x
    x = 376,313,556.73/21,972.62
  6. Step 6: Final answer
    x = 17,126.48

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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.