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Finding the Fourth Proportional to 12,511.87, 18,765.64 and 5,848.97

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Solution

The fourth proportional to 12,511.87, 18,765.64 and 5,848.97 is: 8,772.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511.87 : 18,765.64 = 5,848.97 : x
  2. Step 2: Convert to fraction form
    12,511.87/18,765.64 = 5,848.97/x
  3. Step 3: Cross multiply
    12,511.87x = 18,765.64 × 5,848.97
  4. Step 4: Simplify right side
    12,511.87x = 109,759,665.39
  5. Step 5: Solve for x
    x = 109,759,665.39/12,511.87
  6. Step 6: Final answer
    x = 8,772.44

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1.5x scale

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.