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Finding the Fourth Proportional to 12,319.79, 17,003.39 and 7,013.88

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Solution

The fourth proportional to 12,319.79, 17,003.39 and 7,013.88 is: 9,680.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,319.79 : 17,003.39 = 7,013.88 : x
  2. Step 2: Convert to fraction form
    12,319.79/17,003.39 = 7,013.88/x
  3. Step 3: Cross multiply
    12,319.79x = 17,003.39 × 7,013.88
  4. Step 4: Simplify right side
    12,319.79x = 119,259,701.98
  5. Step 5: Solve for x
    x = 119,259,701.98/12,319.79
  6. Step 6: Final answer
    x = 9,680.34

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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.