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Finding the Fourth Proportional to 12,976.00, 17,907.08 and 7,671.31

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Solution

The fourth proportional to 12,976.00, 17,907.08 and 7,671.31 is: 10,586.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,976.00 : 17,907.08 = 7,671.31 : x
  2. Step 2: Convert to fraction form
    12,976.00/17,907.08 = 7,671.31/x
  3. Step 3: Cross multiply
    12,976.00x = 17,907.08 × 7,671.31
  4. Step 4: Simplify right side
    12,976.00x = 137,370,678.75
  5. Step 5: Solve for x
    x = 137,370,678.75/12,976.00
  6. Step 6: Final answer
    x = 10,586.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.