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Finding the Fourth Proportional to 28,068.60, 42,066.51 and 11,409.27

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Solution

The fourth proportional to 28,068.60, 42,066.51 and 11,409.27 is: 17,099.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,068.60 : 42,066.51 = 11,409.27 : x
  2. Step 2: Convert to fraction form
    28,068.60/42,066.51 = 11,409.27/x
  3. Step 3: Cross multiply
    28,068.60x = 42,066.51 × 11,409.27
  4. Step 4: Simplify right side
    28,068.60x = 479,948,170.55
  5. Step 5: Solve for x
    x = 479,948,170.55/28,068.60
  6. Step 6: Final answer
    x = 17,099.11

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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.