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Finding the Fourth Proportional to 26,647.80, 39,993.30 and 25,783.80

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Solution

The fourth proportional to 26,647.80, 39,993.30 and 25,783.80 is: 38,696.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,647.80 : 39,993.30 = 25,783.80 : x
  2. Step 2: Convert to fraction form
    26,647.80/39,993.30 = 25,783.80/x
  3. Step 3: Cross multiply
    26,647.80x = 39,993.30 × 25,783.80
  4. Step 4: Simplify right side
    26,647.80x = 1,031,179,248.54
  5. Step 5: Solve for x
    x = 1,031,179,248.54/26,647.80
  6. Step 6: Final answer
    x = 38,696.60

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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.