Home / 18,749.62-25,868.22-12,379.36

Finding the Fourth Proportional to 18,749.62, 25,868.22 and 12,379.36

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Solution

The fourth proportional to 18,749.62, 25,868.22 and 12,379.36 is: 17,079.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.62 : 25,868.22 = 12,379.36 : x
  2. Step 2: Convert to fraction form
    18,749.62/25,868.22 = 12,379.36/x
  3. Step 3: Cross multiply
    18,749.62x = 25,868.22 × 12,379.36
  4. Step 4: Simplify right side
    18,749.62x = 320,232,007.94
  5. Step 5: Solve for x
    x = 320,232,007.94/18,749.62
  6. Step 6: Final answer
    x = 17,079.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.