Home / 12,161.35-18,239.95-3,394.23

Finding the Fourth Proportional to 12,161.35, 18,239.95 and 3,394.23

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Solution

The fourth proportional to 12,161.35, 18,239.95 and 3,394.23 is: 5,090.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.35 : 18,239.95 = 3,394.23 : x
  2. Step 2: Convert to fraction form
    12,161.35/18,239.95 = 3,394.23/x
  3. Step 3: Cross multiply
    12,161.35x = 18,239.95 × 3,394.23
  4. Step 4: Simplify right side
    12,161.35x = 61,910,585.49
  5. Step 5: Solve for x
    x = 61,910,585.49/12,161.35
  6. Step 6: Final answer
    x = 5,090.77

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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.