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Finding the Fourth Proportional to 16,860.20, 23,267.07 and 9,408.20

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Solution

The fourth proportional to 16,860.20, 23,267.07 and 9,408.20 is: 12,983.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,860.20 : 23,267.07 = 9,408.20 : x
  2. Step 2: Convert to fraction form
    16,860.20/23,267.07 = 9,408.20/x
  3. Step 3: Cross multiply
    16,860.20x = 23,267.07 × 9,408.20
  4. Step 4: Simplify right side
    16,860.20x = 218,901,131.64
  5. Step 5: Solve for x
    x = 218,901,131.64/16,860.20
  6. Step 6: Final answer
    x = 12,983.31

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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.