Home / 12,999.09-19,498.67-3,138.37

Finding the Fourth Proportional to 12,999.09, 19,498.67 and 3,138.37

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Solution

The fourth proportional to 12,999.09, 19,498.67 and 3,138.37 is: 4,707.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.09 : 19,498.67 = 3,138.37 : x
  2. Step 2: Convert to fraction form
    12,999.09/19,498.67 = 3,138.37/x
  3. Step 3: Cross multiply
    12,999.09x = 19,498.67 × 3,138.37
  4. Step 4: Simplify right side
    12,999.09x = 61,194,005.95
  5. Step 5: Solve for x
    x = 61,194,005.95/12,999.09
  6. Step 6: Final answer
    x = 4,707.56

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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.