Home / 14,138.92-21,214.38-7,115.26

Finding the Fourth Proportional to 14,138.92, 21,214.38 and 7,115.26

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Solution

The fourth proportional to 14,138.92, 21,214.38 and 7,115.26 is: 10,675.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.92 : 21,214.38 = 7,115.26 : x
  2. Step 2: Convert to fraction form
    14,138.92/21,214.38 = 7,115.26/x
  3. Step 3: Cross multiply
    14,138.92x = 21,214.38 × 7,115.26
  4. Step 4: Simplify right side
    14,138.92x = 150,945,829.44
  5. Step 5: Solve for x
    x = 150,945,829.44/14,138.92
  6. Step 6: Final answer
    x = 10,675.91

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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.