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Finding the Fourth Proportional to 17,880.20, 26,832 and 6,787.16

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Solution

The fourth proportional to 17,880.20, 26,832 and 6,787.16 is: 10,185.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,880.20 : 26,832 = 6,787.16 : x
  2. Step 2: Convert to fraction form
    17,880.20/26,832 = 6,787.16/x
  3. Step 3: Cross multiply
    17,880.20x = 26,832 × 6,787.16
  4. Step 4: Simplify right side
    17,880.20x = 182,113,077.12
  5. Step 5: Solve for x
    x = 182,113,077.12/17,880.20
  6. Step 6: Final answer
    x = 10,185.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.