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Finding the Fourth Proportional to 19,251.96, 28,877.86 and 15,380.97

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Solution

The fourth proportional to 19,251.96, 28,877.86 and 15,380.97 is: 23,071.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,251.96 : 28,877.86 = 15,380.97 : x
  2. Step 2: Convert to fraction form
    19,251.96/28,877.86 = 15,380.97/x
  3. Step 3: Cross multiply
    19,251.96x = 28,877.86 × 15,380.97
  4. Step 4: Simplify right side
    19,251.96x = 444,169,498.32
  5. Step 5: Solve for x
    x = 444,169,498.32/19,251.96
  6. Step 6: Final answer
    x = 23,071.39

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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.