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Finding the Fourth Proportional to 28,447.44, 42,685.56 and 19,194

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Solution

The fourth proportional to 28,447.44, 42,685.56 and 19,194 is: 28,800.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.44 : 42,685.56 = 19,194 : x
  2. Step 2: Convert to fraction form
    28,447.44/42,685.56 = 19,194/x
  3. Step 3: Cross multiply
    28,447.44x = 42,685.56 × 19,194
  4. Step 4: Simplify right side
    28,447.44x = 819,306,638.64
  5. Step 5: Solve for x
    x = 819,306,638.64/28,447.44
  6. Step 6: Final answer
    x = 28,800.72

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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.