Home / 26,456.80-39,620.40-12,589.60

Finding the Fourth Proportional to 26,456.80, 39,620.40 and 12,589.60

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Solution

The fourth proportional to 26,456.80, 39,620.40 and 12,589.60 is: 18,853.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,456.80 : 39,620.40 = 12,589.60 : x
  2. Step 2: Convert to fraction form
    26,456.80/39,620.40 = 12,589.60/x
  3. Step 3: Cross multiply
    26,456.80x = 39,620.40 × 12,589.60
  4. Step 4: Simplify right side
    26,456.80x = 498,804,987.84
  5. Step 5: Solve for x
    x = 498,804,987.84/26,456.80
  6. Step 6: Final answer
    x = 18,853.56

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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.