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Finding the Fourth Proportional to 12,650.67, 18,978.48 and 4,858.92

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Solution

The fourth proportional to 12,650.67, 18,978.48 and 4,858.92 is: 7,289.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,650.67 : 18,978.48 = 4,858.92 : x
  2. Step 2: Convert to fraction form
    12,650.67/18,978.48 = 4,858.92/x
  3. Step 3: Cross multiply
    12,650.67x = 18,978.48 × 4,858.92
  4. Step 4: Simplify right side
    12,650.67x = 92,214,916.04
  5. Step 5: Solve for x
    x = 92,214,916.04/12,650.67
  6. Step 6: Final answer
    x = 7,289.33

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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.