Home / 12,138.61-18,207.94-3,373.55

Finding the Fourth Proportional to 12,138.61, 18,207.94 and 3,373.55

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Solution

The fourth proportional to 12,138.61, 18,207.94 and 3,373.55 is: 5,060.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.61 : 18,207.94 = 3,373.55 : x
  2. Step 2: Convert to fraction form
    12,138.61/18,207.94 = 3,373.55/x
  3. Step 3: Cross multiply
    12,138.61x = 18,207.94 × 3,373.55
  4. Step 4: Simplify right side
    12,138.61x = 61,425,371.12
  5. Step 5: Solve for x
    x = 61,425,371.12/12,138.61
  6. Step 6: Final answer
    x = 5,060.33

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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.