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Finding the Fourth Proportional to 13,980.44, 20,980.38 and 9,602.12

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Solution

The fourth proportional to 13,980.44, 20,980.38 and 9,602.12 is: 14,409.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.44 : 20,980.38 = 9,602.12 : x
  2. Step 2: Convert to fraction form
    13,980.44/20,980.38 = 9,602.12/x
  3. Step 3: Cross multiply
    13,980.44x = 20,980.38 × 9,602.12
  4. Step 4: Simplify right side
    13,980.44x = 201,456,126.41
  5. Step 5: Solve for x
    x = 201,456,126.41/13,980.44
  6. Step 6: Final answer
    x = 14,409.86

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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.