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Finding the Fourth Proportional to 14,280.15, 21,416.93 and 5,396.43

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Solution

The fourth proportional to 14,280.15, 21,416.93 and 5,396.43 is: 8,093.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.15 : 21,416.93 = 5,396.43 : x
  2. Step 2: Convert to fraction form
    14,280.15/21,416.93 = 5,396.43/x
  3. Step 3: Cross multiply
    14,280.15x = 21,416.93 × 5,396.43
  4. Step 4: Simplify right side
    14,280.15x = 115,574,936.58
  5. Step 5: Solve for x
    x = 115,574,936.58/14,280.15
  6. Step 6: Final answer
    x = 8,093.40

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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.