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Finding the Fourth Proportional to 19,168.56, 28,752.84 and 8,074.80

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Solution

The fourth proportional to 19,168.56, 28,752.84 and 8,074.80 is: 12,112.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,168.56 : 28,752.84 = 8,074.80 : x
  2. Step 2: Convert to fraction form
    19,168.56/28,752.84 = 8,074.80/x
  3. Step 3: Cross multiply
    19,168.56x = 28,752.84 × 8,074.80
  4. Step 4: Simplify right side
    19,168.56x = 232,173,432.43
  5. Step 5: Solve for x
    x = 232,173,432.43/19,168.56
  6. Step 6: Final answer
    x = 12,112.20

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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.