Home / 13,579.40-20,361.72-4,216.88

Finding the Fourth Proportional to 13,579.40, 20,361.72 and 4,216.88

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Solution

The fourth proportional to 13,579.40, 20,361.72 and 4,216.88 is: 6,323.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.40 : 20,361.72 = 4,216.88 : x
  2. Step 2: Convert to fraction form
    13,579.40/20,361.72 = 4,216.88/x
  3. Step 3: Cross multiply
    13,579.40x = 20,361.72 × 4,216.88
  4. Step 4: Simplify right side
    13,579.40x = 85,862,929.83
  5. Step 5: Solve for x
    x = 85,862,929.83/13,579.40
  6. Step 6: Final answer
    x = 6,323.03

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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.