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Finding the Fourth Proportional to 12,245.84, 18,339.58 and 6,690.88

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Solution

The fourth proportional to 12,245.84, 18,339.58 and 6,690.88 is: 10,020.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,245.84 : 18,339.58 = 6,690.88 : x
  2. Step 2: Convert to fraction form
    12,245.84/18,339.58 = 6,690.88/x
  3. Step 3: Cross multiply
    12,245.84x = 18,339.58 × 6,690.88
  4. Step 4: Simplify right side
    12,245.84x = 122,707,929.03
  5. Step 5: Solve for x
    x = 122,707,929.03/12,245.84
  6. Step 6: Final answer
    x = 10,020.38

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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.