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Finding the Fourth Proportional to 19,156.48, 28,722.86 and 8,057.46

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Solution

The fourth proportional to 19,156.48, 28,722.86 and 8,057.46 is: 12,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,156.48 : 28,722.86 = 8,057.46 : x
  2. Step 2: Convert to fraction form
    19,156.48/28,722.86 = 8,057.46/x
  3. Step 3: Cross multiply
    19,156.48x = 28,722.86 × 8,057.46
  4. Step 4: Simplify right side
    19,156.48x = 231,433,295.54
  5. Step 5: Solve for x
    x = 231,433,295.54/19,156.48
  6. Step 6: Final answer
    x = 12,081.20

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