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Finding the Fourth Proportional to 12,893.92, 19,322.62 and 5,490.92

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Solution

The fourth proportional to 12,893.92, 19,322.62 and 5,490.92 is: 8,228.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,893.92 : 19,322.62 = 5,490.92 : x
  2. Step 2: Convert to fraction form
    12,893.92/19,322.62 = 5,490.92/x
  3. Step 3: Cross multiply
    12,893.92x = 19,322.62 × 5,490.92
  4. Step 4: Simplify right side
    12,893.92x = 106,098,960.61
  5. Step 5: Solve for x
    x = 106,098,960.61/12,893.92
  6. Step 6: Final answer
    x = 8,228.60

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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.