Home / 12,239.42-18,360.35-3,917.34

Finding the Fourth Proportional to 12,239.42, 18,360.35 and 3,917.34

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Solution

The fourth proportional to 12,239.42, 18,360.35 and 3,917.34 is: 5,876.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.42 : 18,360.35 = 3,917.34 : x
  2. Step 2: Convert to fraction form
    12,239.42/18,360.35 = 3,917.34/x
  3. Step 3: Cross multiply
    12,239.42x = 18,360.35 × 3,917.34
  4. Step 4: Simplify right side
    12,239.42x = 71,923,713.88
  5. Step 5: Solve for x
    x = 71,923,713.88/12,239.42
  6. Step 6: Final answer
    x = 5,876.40

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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.