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Finding the Fourth Proportional to 21,735.36, 29,994.64 and 12,303.84

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Solution

The fourth proportional to 21,735.36, 29,994.64 and 12,303.84 is: 16,979.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,735.36 : 29,994.64 = 12,303.84 : x
  2. Step 2: Convert to fraction form
    21,735.36/29,994.64 = 12,303.84/x
  3. Step 3: Cross multiply
    21,735.36x = 29,994.64 × 12,303.84
  4. Step 4: Simplify right side
    21,735.36x = 369,049,251.42
  5. Step 5: Solve for x
    x = 369,049,251.42/21,735.36
  6. Step 6: Final answer
    x = 16,979.21

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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.