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Finding the Fourth Proportional to 19,643.92, 29,397.84 and 18,827.44

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Solution

The fourth proportional to 19,643.92, 29,397.84 and 18,827.44 is: 28,175.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,643.92 : 29,397.84 = 18,827.44 : x
  2. Step 2: Convert to fraction form
    19,643.92/29,397.84 = 18,827.44/x
  3. Step 3: Cross multiply
    19,643.92x = 29,397.84 × 18,827.44
  4. Step 4: Simplify right side
    19,643.92x = 553,486,068.73
  5. Step 5: Solve for x
    x = 553,486,068.73/19,643.92
  6. Step 6: Final answer
    x = 28,175.95

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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.