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Finding the Fourth Proportional to 13,213.64, 19,814.69 and 4,999.88

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Solution

The fourth proportional to 13,213.64, 19,814.69 and 4,999.88 is: 7,497.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.64 : 19,814.69 = 4,999.88 : x
  2. Step 2: Convert to fraction form
    13,213.64/19,814.69 = 4,999.88/x
  3. Step 3: Cross multiply
    13,213.64x = 19,814.69 × 4,999.88
  4. Step 4: Simplify right side
    13,213.64x = 99,070,948.16
  5. Step 5: Solve for x
    x = 99,070,948.16/13,213.64
  6. Step 6: Final answer
    x = 7,497.63

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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.