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Finding the Fourth Proportional to 12,375.53, 17,078.01 and 6,997.88

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Solution

The fourth proportional to 12,375.53, 17,078.01 and 6,997.88 is: 9,656.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,375.53 : 17,078.01 = 6,997.88 : x
  2. Step 2: Convert to fraction form
    12,375.53/17,078.01 = 6,997.88/x
  3. Step 3: Cross multiply
    12,375.53x = 17,078.01 × 6,997.88
  4. Step 4: Simplify right side
    12,375.53x = 119,509,779.23
  5. Step 5: Solve for x
    x = 119,509,779.23/12,375.53
  6. Step 6: Final answer
    x = 9,656.95

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1.5x scale

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.