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Finding the Fourth Proportional to 12,229.70, 16,885.41 and 9,043.70

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Solution

The fourth proportional to 12,229.70, 16,885.41 and 9,043.70 is: 12,486.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,229.70 : 16,885.41 = 9,043.70 : x
  2. Step 2: Convert to fraction form
    12,229.70/16,885.41 = 9,043.70/x
  3. Step 3: Cross multiply
    12,229.70x = 16,885.41 × 9,043.70
  4. Step 4: Simplify right side
    12,229.70x = 152,706,582.42
  5. Step 5: Solve for x
    x = 152,706,582.42/12,229.70
  6. Step 6: Final answer
    x = 12,486.54

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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.