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Finding the Fourth Proportional to 22,170.86, 30,601.04 and 12,744.90

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Solution

The fourth proportional to 22,170.86, 30,601.04 and 12,744.90 is: 17,590.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,170.86 : 30,601.04 = 12,744.90 : x
  2. Step 2: Convert to fraction form
    22,170.86/30,601.04 = 12,744.90/x
  3. Step 3: Cross multiply
    22,170.86x = 30,601.04 × 12,744.90
  4. Step 4: Simplify right side
    22,170.86x = 390,007,194.70
  5. Step 5: Solve for x
    x = 390,007,194.70/22,170.86
  6. Step 6: Final answer
    x = 17,590.98

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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.