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Finding the Fourth Proportional to 12,863.92, 19,392.29 and 12,006.63

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Solution

The fourth proportional to 12,863.92, 19,392.29 and 12,006.63 is: 18,099.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,863.92 : 19,392.29 = 12,006.63 : x
  2. Step 2: Convert to fraction form
    12,863.92/19,392.29 = 12,006.63/x
  3. Step 3: Cross multiply
    12,863.92x = 19,392.29 × 12,006.63
  4. Step 4: Simplify right side
    12,863.92x = 232,835,893.89
  5. Step 5: Solve for x
    x = 232,835,893.89/12,863.92
  6. Step 6: Final answer
    x = 18,099.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.