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Finding the Fourth Proportional to 12,787.08, 17,651.63 and 8,597.76

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Solution

The fourth proportional to 12,787.08, 17,651.63 and 8,597.76 is: 11,868.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.08 : 17,651.63 = 8,597.76 : x
  2. Step 2: Convert to fraction form
    12,787.08/17,651.63 = 8,597.76/x
  3. Step 3: Cross multiply
    12,787.08x = 17,651.63 × 8,597.76
  4. Step 4: Simplify right side
    12,787.08x = 151,764,478.35
  5. Step 5: Solve for x
    x = 151,764,478.35/12,787.08
  6. Step 6: Final answer
    x = 11,868.58

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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.