Home / 16,408.68-22,640.58-9,690.90

Finding the Fourth Proportional to 16,408.68, 22,640.58 and 9,690.90

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Solution

The fourth proportional to 16,408.68, 22,640.58 and 9,690.90 is: 13,371.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,408.68 : 22,640.58 = 9,690.90 : x
  2. Step 2: Convert to fraction form
    16,408.68/22,640.58 = 9,690.90/x
  3. Step 3: Cross multiply
    16,408.68x = 22,640.58 × 9,690.90
  4. Step 4: Simplify right side
    16,408.68x = 219,407,596.72
  5. Step 5: Solve for x
    x = 219,407,596.72/16,408.68
  6. Step 6: Final answer
    x = 13,371.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.