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Finding the Fourth Proportional to 28,199.64, 42,299.54 and 11,340.42

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Solution

The fourth proportional to 28,199.64, 42,299.54 and 11,340.42 is: 17,010.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,199.64 : 42,299.54 = 11,340.42 : x
  2. Step 2: Convert to fraction form
    28,199.64/42,299.54 = 11,340.42/x
  3. Step 3: Cross multiply
    28,199.64x = 42,299.54 × 11,340.42
  4. Step 4: Simplify right side
    28,199.64x = 479,694,492.70
  5. Step 5: Solve for x
    x = 479,694,492.70/28,199.64
  6. Step 6: Final answer
    x = 17,010.66

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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.