Home / 13,611.96-20,418.48-4,258.26

Finding the Fourth Proportional to 13,611.96, 20,418.48 and 4,258.26

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Solution

The fourth proportional to 13,611.96, 20,418.48 and 4,258.26 is: 6,387.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.96 : 20,418.48 = 4,258.26 : x
  2. Step 2: Convert to fraction form
    13,611.96/20,418.48 = 4,258.26/x
  3. Step 3: Cross multiply
    13,611.96x = 20,418.48 × 4,258.26
  4. Step 4: Simplify right side
    13,611.96x = 86,947,196.64
  5. Step 5: Solve for x
    x = 86,947,196.64/13,611.96
  6. Step 6: Final answer
    x = 6,387.56

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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.