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Finding the Fourth Proportional to 12,433.68, 18,650.68 and 4,939.08

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Solution

The fourth proportional to 12,433.68, 18,650.68 and 4,939.08 is: 7,408.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,433.68 : 18,650.68 = 4,939.08 : x
  2. Step 2: Convert to fraction form
    12,433.68/18,650.68 = 4,939.08/x
  3. Step 3: Cross multiply
    12,433.68x = 18,650.68 × 4,939.08
  4. Step 4: Simplify right side
    12,433.68x = 92,117,200.57
  5. Step 5: Solve for x
    x = 92,117,200.57/12,433.68
  6. Step 6: Final answer
    x = 7,408.68

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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.