Home / 13,587.21-20,380.34-3,726.33

Finding the Fourth Proportional to 13,587.21, 20,380.34 and 3,726.33

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Solution

The fourth proportional to 13,587.21, 20,380.34 and 3,726.33 is: 5,589.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.21 : 20,380.34 = 3,726.33 : x
  2. Step 2: Convert to fraction form
    13,587.21/20,380.34 = 3,726.33/x
  3. Step 3: Cross multiply
    13,587.21x = 20,380.34 × 3,726.33
  4. Step 4: Simplify right side
    13,587.21x = 75,943,853.72
  5. Step 5: Solve for x
    x = 75,943,853.72/13,587.21
  6. Step 6: Final answer
    x = 5,589.36

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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.