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Finding the Fourth Proportional to 26,015.40, 39,048.70 and 12,882.60

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Solution

The fourth proportional to 26,015.40, 39,048.70 and 12,882.60 is: 19,336.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,015.40 : 39,048.70 = 12,882.60 : x
  2. Step 2: Convert to fraction form
    26,015.40/39,048.70 = 12,882.60/x
  3. Step 3: Cross multiply
    26,015.40x = 39,048.70 × 12,882.60
  4. Step 4: Simplify right side
    26,015.40x = 503,048,782.62
  5. Step 5: Solve for x
    x = 503,048,782.62/26,015.40
  6. Step 6: Final answer
    x = 19,336.58

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.