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Finding the Fourth Proportional to 12,271.70, 16,935.63 and 7,238.88

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Solution

The fourth proportional to 12,271.70, 16,935.63 and 7,238.88 is: 9,990.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,271.70 : 16,935.63 = 7,238.88 : x
  2. Step 2: Convert to fraction form
    12,271.70/16,935.63 = 7,238.88/x
  3. Step 3: Cross multiply
    12,271.70x = 16,935.63 × 7,238.88
  4. Step 4: Simplify right side
    12,271.70x = 122,594,993.29
  5. Step 5: Solve for x
    x = 122,594,993.29/12,271.70
  6. Step 6: Final answer
    x = 9,990.06

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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.