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Finding the Fourth Proportional to 19,758.21, 29,640.04 and 8,068.70

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Solution

The fourth proportional to 19,758.21, 29,640.04 and 8,068.70 is: 12,104.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,758.21 : 29,640.04 = 8,068.70 : x
  2. Step 2: Convert to fraction form
    19,758.21/29,640.04 = 8,068.70/x
  3. Step 3: Cross multiply
    19,758.21x = 29,640.04 × 8,068.70
  4. Step 4: Simplify right side
    19,758.21x = 239,156,442.55
  5. Step 5: Solve for x
    x = 239,156,442.55/19,758.21
  6. Step 6: Final answer
    x = 12,104.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.