Home / 13,458.36-20,173.96-8,464.30

Finding the Fourth Proportional to 13,458.36, 20,173.96 and 8,464.30

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Solution

The fourth proportional to 13,458.36, 20,173.96 and 8,464.30 is: 12,687.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.36 : 20,173.96 = 8,464.30 : x
  2. Step 2: Convert to fraction form
    13,458.36/20,173.96 = 8,464.30/x
  3. Step 3: Cross multiply
    13,458.36x = 20,173.96 × 8,464.30
  4. Step 4: Simplify right side
    13,458.36x = 170,758,449.63
  5. Step 5: Solve for x
    x = 170,758,449.63/13,458.36
  6. Step 6: Final answer
    x = 12,687.91

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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.