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Finding the Fourth Proportional to 15,978.79, 23,953.60 and 5,584.87

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Solution

The fourth proportional to 15,978.79, 23,953.60 and 5,584.87 is: 8,372.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,978.79 : 23,953.60 = 5,584.87 : x
  2. Step 2: Convert to fraction form
    15,978.79/23,953.60 = 5,584.87/x
  3. Step 3: Cross multiply
    15,978.79x = 23,953.60 × 5,584.87
  4. Step 4: Simplify right side
    15,978.79x = 133,777,742.03
  5. Step 5: Solve for x
    x = 133,777,742.03/15,978.79
  6. Step 6: Final answer
    x = 8,372.21

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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.