Home / 12,125.68-18,185.32-8,174.64

Finding the Fourth Proportional to 12,125.68, 18,185.32 and 8,174.64

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Solution

The fourth proportional to 12,125.68, 18,185.32 and 8,174.64 is: 12,259.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.68 : 18,185.32 = 8,174.64 : x
  2. Step 2: Convert to fraction form
    12,125.68/18,185.32 = 8,174.64/x
  3. Step 3: Cross multiply
    12,125.68x = 18,185.32 × 8,174.64
  4. Step 4: Simplify right side
    12,125.68x = 148,658,444.28
  5. Step 5: Solve for x
    x = 148,658,444.28/12,125.68
  6. Step 6: Final answer
    x = 12,259.80

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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.