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Finding the Fourth Proportional to 22,141.99, 30,555.50 and 12,205.99

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Solution

The fourth proportional to 22,141.99, 30,555.50 and 12,205.99 is: 16,844.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,141.99 : 30,555.50 = 12,205.99 : x
  2. Step 2: Convert to fraction form
    22,141.99/30,555.50 = 12,205.99/x
  3. Step 3: Cross multiply
    22,141.99x = 30,555.50 × 12,205.99
  4. Step 4: Simplify right side
    22,141.99x = 372,960,066.42
  5. Step 5: Solve for x
    x = 372,960,066.42/22,141.99
  6. Step 6: Final answer
    x = 16,844.02

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Double scale
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Similar ratio
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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.