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Finding the Fourth Proportional to 12,672.60, 19,014.30 and 8,774.88

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Solution

The fourth proportional to 12,672.60, 19,014.30 and 8,774.88 is: 13,166.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.60 : 19,014.30 = 8,774.88 : x
  2. Step 2: Convert to fraction form
    12,672.60/19,014.30 = 8,774.88/x
  3. Step 3: Cross multiply
    12,672.60x = 19,014.30 × 8,774.88
  4. Step 4: Simplify right side
    12,672.60x = 166,848,200.78
  5. Step 5: Solve for x
    x = 166,848,200.78/12,672.60
  6. Step 6: Final answer
    x = 13,166.06

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1.5x scale

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.