Home / 14,121.83-19,489.68-8,155.37

Finding the Fourth Proportional to 14,121.83, 19,489.68 and 8,155.37

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Solution

The fourth proportional to 14,121.83, 19,489.68 and 8,155.37 is: 11,255.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.83 : 19,489.68 = 8,155.37 : x
  2. Step 2: Convert to fraction form
    14,121.83/19,489.68 = 8,155.37/x
  3. Step 3: Cross multiply
    14,121.83x = 19,489.68 × 8,155.37
  4. Step 4: Simplify right side
    14,121.83x = 158,945,600.31
  5. Step 5: Solve for x
    x = 158,945,600.31/14,121.83
  6. Step 6: Final answer
    x = 11,255.31

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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.