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Finding the Fourth Proportional to 18,643.92, 25,726.60 and 10,259.92

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Solution

The fourth proportional to 18,643.92, 25,726.60 and 10,259.92 is: 14,157.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,643.92 : 25,726.60 = 10,259.92 : x
  2. Step 2: Convert to fraction form
    18,643.92/25,726.60 = 10,259.92/x
  3. Step 3: Cross multiply
    18,643.92x = 25,726.60 × 10,259.92
  4. Step 4: Simplify right side
    18,643.92x = 263,952,857.87
  5. Step 5: Solve for x
    x = 263,952,857.87/18,643.92
  6. Step 6: Final answer
    x = 14,157.58

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.