Home / 13,575.22-20,361.86-4,215.02

Finding the Fourth Proportional to 13,575.22, 20,361.86 and 4,215.02

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Solution

The fourth proportional to 13,575.22, 20,361.86 and 4,215.02 is: 6,322.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,575.22 : 20,361.86 = 4,215.02 : x
  2. Step 2: Convert to fraction form
    13,575.22/20,361.86 = 4,215.02/x
  3. Step 3: Cross multiply
    13,575.22x = 20,361.86 × 4,215.02
  4. Step 4: Simplify right side
    13,575.22x = 85,825,647.14
  5. Step 5: Solve for x
    x = 85,825,647.14/13,575.22
  6. Step 6: Final answer
    x = 6,322.23

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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.