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Finding the Fourth Proportional to 19,156.61, 28,738.44 and 8,626.88

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Solution

The fourth proportional to 19,156.61, 28,738.44 and 8,626.88 is: 12,941.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,156.61 : 28,738.44 = 8,626.88 : x
  2. Step 2: Convert to fraction form
    19,156.61/28,738.44 = 8,626.88/x
  3. Step 3: Cross multiply
    19,156.61x = 28,738.44 × 8,626.88
  4. Step 4: Simplify right side
    19,156.61x = 247,922,929.58
  5. Step 5: Solve for x
    x = 247,922,929.58/19,156.61
  6. Step 6: Final answer
    x = 12,941.90

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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.