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Finding the Fourth Proportional to 19,136.25, 28,708.02 and 8,748

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Solution

The fourth proportional to 19,136.25, 28,708.02 and 8,748 is: 13,123.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,136.25 : 28,708.02 = 8,748 : x
  2. Step 2: Convert to fraction form
    19,136.25/28,708.02 = 8,748/x
  3. Step 3: Cross multiply
    19,136.25x = 28,708.02 × 8,748
  4. Step 4: Simplify right side
    19,136.25x = 251,137,758.96
  5. Step 5: Solve for x
    x = 251,137,758.96/19,136.25
  6. Step 6: Final answer
    x = 13,123.67

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.