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Finding the Fourth Proportional to 18,646.27, 27,981.20 and 16,894.85

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Solution

The fourth proportional to 18,646.27, 27,981.20 and 16,894.85 is: 25,352.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,646.27 : 27,981.20 = 16,894.85 : x
  2. Step 2: Convert to fraction form
    18,646.27/27,981.20 = 16,894.85/x
  3. Step 3: Cross multiply
    18,646.27x = 27,981.20 × 16,894.85
  4. Step 4: Simplify right side
    18,646.27x = 472,738,079.15
  5. Step 5: Solve for x
    x = 472,738,079.15/18,646.27
  6. Step 6: Final answer
    x = 25,352.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.