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Finding the Fourth Proportional to 14,292.68, 19,724.04 and 7,919.46

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Solution

The fourth proportional to 14,292.68, 19,724.04 and 7,919.46 is: 10,928.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,292.68 : 19,724.04 = 7,919.46 : x
  2. Step 2: Convert to fraction form
    14,292.68/19,724.04 = 7,919.46/x
  3. Step 3: Cross multiply
    14,292.68x = 19,724.04 × 7,919.46
  4. Step 4: Simplify right side
    14,292.68x = 156,203,745.82
  5. Step 5: Solve for x
    x = 156,203,745.82/14,292.68
  6. Step 6: Final answer
    x = 10,928.94

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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.