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Finding the Fourth Proportional to 13,492.14, 18,611.52 and 8,515.50

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Solution

The fourth proportional to 13,492.14, 18,611.52 and 8,515.50 is: 11,746.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,492.14 : 18,611.52 = 8,515.50 : x
  2. Step 2: Convert to fraction form
    13,492.14/18,611.52 = 8,515.50/x
  3. Step 3: Cross multiply
    13,492.14x = 18,611.52 × 8,515.50
  4. Step 4: Simplify right side
    13,492.14x = 158,486,398.56
  5. Step 5: Solve for x
    x = 158,486,398.56/13,492.14
  6. Step 6: Final answer
    x = 11,746.57

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