Home / 18,858.86-26,021.36-12,143.56

Finding the Fourth Proportional to 18,858.86, 26,021.36 and 12,143.56

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Solution

The fourth proportional to 18,858.86, 26,021.36 and 12,143.56 is: 16,755.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858.86 : 26,021.36 = 12,143.56 : x
  2. Step 2: Convert to fraction form
    18,858.86/26,021.36 = 12,143.56/x
  3. Step 3: Cross multiply
    18,858.86x = 26,021.36 × 12,143.56
  4. Step 4: Simplify right side
    18,858.86x = 315,991,946.44
  5. Step 5: Solve for x
    x = 315,991,946.44/18,858.86
  6. Step 6: Final answer
    x = 16,755.62

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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.