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Finding the Fourth Proportional to 22,106.61, 30,506.81 and 12,170.61

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Solution

The fourth proportional to 22,106.61, 30,506.81 and 12,170.61 is: 16,795.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,106.61 : 30,506.81 = 12,170.61 : x
  2. Step 2: Convert to fraction form
    22,106.61/30,506.81 = 12,170.61/x
  3. Step 3: Cross multiply
    22,106.61x = 30,506.81 × 12,170.61
  4. Step 4: Simplify right side
    22,106.61x = 371,286,426.00
  5. Step 5: Solve for x
    x = 371,286,426.00/22,106.61
  6. Step 6: Final answer
    x = 16,795.27

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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.