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Finding the Fourth Proportional to 19,863.82, 29,800.86 and 7,384.24

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Solution

The fourth proportional to 19,863.82, 29,800.86 and 7,384.24 is: 11,078.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,863.82 : 29,800.86 = 7,384.24 : x
  2. Step 2: Convert to fraction form
    19,863.82/29,800.86 = 7,384.24/x
  3. Step 3: Cross multiply
    19,863.82x = 29,800.86 × 7,384.24
  4. Step 4: Simplify right side
    19,863.82x = 220,056,702.45
  5. Step 5: Solve for x
    x = 220,056,702.45/19,863.82
  6. Step 6: Final answer
    x = 11,078.27

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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.