Home / 12,138.84-18,208.44-3,373.56

Finding the Fourth Proportional to 12,138.84, 18,208.44 and 3,373.56

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Solution

The fourth proportional to 12,138.84, 18,208.44 and 3,373.56 is: 5,060.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.84 : 18,208.44 = 3,373.56 : x
  2. Step 2: Convert to fraction form
    12,138.84/18,208.44 = 3,373.56/x
  3. Step 3: Cross multiply
    12,138.84x = 18,208.44 × 3,373.56
  4. Step 4: Simplify right side
    12,138.84x = 61,427,264.85
  5. Step 5: Solve for x
    x = 61,427,264.85/12,138.84
  6. Step 6: Final answer
    x = 5,060.39

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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.