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Finding the Fourth Proportional to 19,087.20, 26,400.24 and 16,879.20

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Solution

The fourth proportional to 19,087.20, 26,400.24 and 16,879.20 is: 23,346.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,087.20 : 26,400.24 = 16,879.20 : x
  2. Step 2: Convert to fraction form
    19,087.20/26,400.24 = 16,879.20/x
  3. Step 3: Cross multiply
    19,087.20x = 26,400.24 × 16,879.20
  4. Step 4: Simplify right side
    19,087.20x = 445,614,931.01
  5. Step 5: Solve for x
    x = 445,614,931.01/19,087.20
  6. Step 6: Final answer
    x = 23,346.27

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.