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Finding the Fourth Proportional to 19,800.66, 27,321.44 and 11,298.90

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Solution

The fourth proportional to 19,800.66, 27,321.44 and 11,298.90 is: 15,590.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,800.66 : 27,321.44 = 11,298.90 : x
  2. Step 2: Convert to fraction form
    19,800.66/27,321.44 = 11,298.90/x
  3. Step 3: Cross multiply
    19,800.66x = 27,321.44 × 11,298.90
  4. Step 4: Simplify right side
    19,800.66x = 308,702,190.17
  5. Step 5: Solve for x
    x = 308,702,190.17/19,800.66
  6. Step 6: Final answer
    x = 15,590.50

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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.