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Finding the Fourth Proportional to 12,245.51, 16,900.21 and 6,869.42

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Solution

The fourth proportional to 12,245.51, 16,900.21 and 6,869.42 is: 9,480.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,245.51 : 16,900.21 = 6,869.42 : x
  2. Step 2: Convert to fraction form
    12,245.51/16,900.21 = 6,869.42/x
  3. Step 3: Cross multiply
    12,245.51x = 16,900.21 × 6,869.42
  4. Step 4: Simplify right side
    12,245.51x = 116,094,640.58
  5. Step 5: Solve for x
    x = 116,094,640.58/12,245.51
  6. Step 6: Final answer
    x = 9,480.59

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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.