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Finding the Fourth Proportional to 30,396.88, 45,511.32 and 15,573.88

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Solution

The fourth proportional to 30,396.88, 45,511.32 and 15,573.88 is: 23,317.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,396.88 : 45,511.32 = 15,573.88 : x
  2. Step 2: Convert to fraction form
    30,396.88/45,511.32 = 15,573.88/x
  3. Step 3: Cross multiply
    30,396.88x = 45,511.32 × 15,573.88
  4. Step 4: Simplify right side
    30,396.88x = 708,787,836.32
  5. Step 5: Solve for x
    x = 708,787,836.32/30,396.88
  6. Step 6: Final answer
    x = 23,317.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.