Home / 21,997.91-30,349.97-12,436.87

Finding the Fourth Proportional to 21,997.91, 30,349.97 and 12,436.87

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Solution

The fourth proportional to 21,997.91, 30,349.97 and 12,436.87 is: 17,158.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,997.91 : 30,349.97 = 12,436.87 : x
  2. Step 2: Convert to fraction form
    21,997.91/30,349.97 = 12,436.87/x
  3. Step 3: Cross multiply
    21,997.91x = 30,349.97 × 12,436.87
  4. Step 4: Simplify right side
    21,997.91x = 377,458,631.39
  5. Step 5: Solve for x
    x = 377,458,631.39/21,997.91
  6. Step 6: Final answer
    x = 17,158.84

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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.