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Finding the Fourth Proportional to 19,591.62, 27,036.63 and 10,639.20

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Solution

The fourth proportional to 19,591.62, 27,036.63 and 10,639.20 is: 14,682.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,591.62 : 27,036.63 = 10,639.20 : x
  2. Step 2: Convert to fraction form
    19,591.62/27,036.63 = 10,639.20/x
  3. Step 3: Cross multiply
    19,591.62x = 27,036.63 × 10,639.20
  4. Step 4: Simplify right side
    19,591.62x = 287,648,113.90
  5. Step 5: Solve for x
    x = 287,648,113.90/19,591.62
  6. Step 6: Final answer
    x = 14,682.20

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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.