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Finding the Fourth Proportional to 19,026.72, 28,538.40 and 7,474.24

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Solution

The fourth proportional to 19,026.72, 28,538.40 and 7,474.24 is: 11,210.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,026.72 : 28,538.40 = 7,474.24 : x
  2. Step 2: Convert to fraction form
    19,026.72/28,538.40 = 7,474.24/x
  3. Step 3: Cross multiply
    19,026.72x = 28,538.40 × 7,474.24
  4. Step 4: Simplify right side
    19,026.72x = 213,302,850.82
  5. Step 5: Solve for x
    x = 213,302,850.82/19,026.72
  6. Step 6: Final answer
    x = 11,210.70

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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.