Home / 12,122.11-16,728.34-6,816.93

Finding the Fourth Proportional to 12,122.11, 16,728.34 and 6,816.93

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Solution

The fourth proportional to 12,122.11, 16,728.34 and 6,816.93 is: 9,407.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.11 : 16,728.34 = 6,816.93 : x
  2. Step 2: Convert to fraction form
    12,122.11/16,728.34 = 6,816.93/x
  3. Step 3: Cross multiply
    12,122.11x = 16,728.34 × 6,816.93
  4. Step 4: Simplify right side
    12,122.11x = 114,035,922.80
  5. Step 5: Solve for x
    x = 114,035,922.80/12,122.11
  6. Step 6: Final answer
    x = 9,407.27

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Half scale
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Double scale
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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.