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Finding the Fourth Proportional to 12,245.84, 16,898.65 and 6,940.74

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Solution

The fourth proportional to 12,245.84, 16,898.65 and 6,940.74 is: 9,577.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,245.84 : 16,898.65 = 6,940.74 : x
  2. Step 2: Convert to fraction form
    12,245.84/16,898.65 = 6,940.74/x
  3. Step 3: Cross multiply
    12,245.84x = 16,898.65 × 6,940.74
  4. Step 4: Simplify right side
    12,245.84x = 117,289,136.00
  5. Step 5: Solve for x
    x = 117,289,136.00/12,245.84
  6. Step 6: Final answer
    x = 9,577.88

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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.