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Finding the Fourth Proportional to 13,388.21, 20,063.08 and 7,532.45

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Solution

The fourth proportional to 13,388.21, 20,063.08 and 7,532.45 is: 11,287.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.21 : 20,063.08 = 7,532.45 : x
  2. Step 2: Convert to fraction form
    13,388.21/20,063.08 = 7,532.45/x
  3. Step 3: Cross multiply
    13,388.21x = 20,063.08 × 7,532.45
  4. Step 4: Simplify right side
    13,388.21x = 151,124,206.52
  5. Step 5: Solve for x
    x = 151,124,206.52/13,388.21
  6. Step 6: Final answer
    x = 11,287.86

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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.