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Finding the Fourth Proportional to 22,175.40, 30,601.80 and 12,103.50

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Solution

The fourth proportional to 22,175.40, 30,601.80 and 12,103.50 is: 16,702.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,175.40 : 30,601.80 = 12,103.50 : x
  2. Step 2: Convert to fraction form
    22,175.40/30,601.80 = 12,103.50/x
  3. Step 3: Cross multiply
    22,175.40x = 30,601.80 × 12,103.50
  4. Step 4: Simplify right side
    22,175.40x = 370,388,886.30
  5. Step 5: Solve for x
    x = 370,388,886.30/22,175.40
  6. Step 6: Final answer
    x = 16,702.69

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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.