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Finding the Fourth Proportional to 14,321.61, 21,483.87 and 4,961.61

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Solution

The fourth proportional to 14,321.61, 21,483.87 and 4,961.61 is: 7,442.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,321.61 : 21,483.87 = 4,961.61 : x
  2. Step 2: Convert to fraction form
    14,321.61/21,483.87 = 4,961.61/x
  3. Step 3: Cross multiply
    14,321.61x = 21,483.87 × 4,961.61
  4. Step 4: Simplify right side
    14,321.61x = 106,594,584.23
  5. Step 5: Solve for x
    x = 106,594,584.23/14,321.61
  6. Step 6: Final answer
    x = 7,442.92

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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.