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Finding the Fourth Proportional to 26,564.56, 39,809.56 and 20,993.40

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Solution

The fourth proportional to 26,564.56, 39,809.56 and 20,993.40 is: 31,460.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,564.56 : 39,809.56 = 20,993.40 : x
  2. Step 2: Convert to fraction form
    26,564.56/39,809.56 = 20,993.40/x
  3. Step 3: Cross multiply
    26,564.56x = 39,809.56 × 20,993.40
  4. Step 4: Simplify right side
    26,564.56x = 835,738,016.90
  5. Step 5: Solve for x
    x = 835,738,016.90/26,564.56
  6. Step 6: Final answer
    x = 31,460.64

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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.