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Finding the Fourth Proportional to 19,181.92, 28,750.92 and 8,071.96

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Solution

The fourth proportional to 19,181.92, 28,750.92 and 8,071.96 is: 12,098.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,181.92 : 28,750.92 = 8,071.96 : x
  2. Step 2: Convert to fraction form
    19,181.92/28,750.92 = 8,071.96/x
  3. Step 3: Cross multiply
    19,181.92x = 28,750.92 × 8,071.96
  4. Step 4: Simplify right side
    19,181.92x = 232,076,276.20
  5. Step 5: Solve for x
    x = 232,076,276.20/19,181.92
  6. Step 6: Final answer
    x = 12,098.70

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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.