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Finding the Fourth Proportional to 12,225.94, 16,871.79 and 6,636.94

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Solution

The fourth proportional to 12,225.94, 16,871.79 and 6,636.94 is: 9,158.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.94 : 16,871.79 = 6,636.94 : x
  2. Step 2: Convert to fraction form
    12,225.94/16,871.79 = 6,636.94/x
  3. Step 3: Cross multiply
    12,225.94x = 16,871.79 × 6,636.94
  4. Step 4: Simplify right side
    12,225.94x = 111,977,040.63
  5. Step 5: Solve for x
    x = 111,977,040.63/12,225.94
  6. Step 6: Final answer
    x = 9,158.97

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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.