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Finding the Fourth Proportional to 19,275.88, 28,908.06 and 6,961

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Solution

The fourth proportional to 19,275.88, 28,908.06 and 6,961 is: 10,439.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,275.88 : 28,908.06 = 6,961 : x
  2. Step 2: Convert to fraction form
    19,275.88/28,908.06 = 6,961/x
  3. Step 3: Cross multiply
    19,275.88x = 28,908.06 × 6,961
  4. Step 4: Simplify right side
    19,275.88x = 201,229,005.66
  5. Step 5: Solve for x
    x = 201,229,005.66/19,275.88
  6. Step 6: Final answer
    x = 10,439.42

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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.