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Finding the Fourth Proportional to 22,387.97, 30,894.19 and 12,314.79

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Solution

The fourth proportional to 22,387.97, 30,894.19 and 12,314.79 is: 16,993.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,387.97 : 30,894.19 = 12,314.79 : x
  2. Step 2: Convert to fraction form
    22,387.97/30,894.19 = 12,314.79/x
  3. Step 3: Cross multiply
    22,387.97x = 30,894.19 × 12,314.79
  4. Step 4: Simplify right side
    22,387.97x = 380,455,431.28
  5. Step 5: Solve for x
    x = 380,455,431.28/22,387.97
  6. Step 6: Final answer
    x = 16,993.74

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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.