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Finding the Fourth Proportional to 14,894.45, 20,561.34 and 8,605.61

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Solution

The fourth proportional to 14,894.45, 20,561.34 and 8,605.61 is: 11,879.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,894.45 : 20,561.34 = 8,605.61 : x
  2. Step 2: Convert to fraction form
    14,894.45/20,561.34 = 8,605.61/x
  3. Step 3: Cross multiply
    14,894.45x = 20,561.34 × 8,605.61
  4. Step 4: Simplify right side
    14,894.45x = 176,942,770.31
  5. Step 5: Solve for x
    x = 176,942,770.31/14,894.45
  6. Step 6: Final answer
    x = 11,879.78

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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.