Home / 12,431.04-17,157.24-8,174.64

Finding the Fourth Proportional to 12,431.04, 17,157.24 and 8,174.64

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Solution

The fourth proportional to 12,431.04, 17,157.24 and 8,174.64 is: 11,282.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.04 : 17,157.24 = 8,174.64 : x
  2. Step 2: Convert to fraction form
    12,431.04/17,157.24 = 8,174.64/x
  3. Step 3: Cross multiply
    12,431.04x = 17,157.24 × 8,174.64
  4. Step 4: Simplify right side
    12,431.04x = 140,254,260.39
  5. Step 5: Solve for x
    x = 140,254,260.39/12,431.04
  6. Step 6: Final answer
    x = 11,282.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.