Home / 13,746.82-20,621.64-3,751.78

Finding the Fourth Proportional to 13,746.82, 20,621.64 and 3,751.78

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Solution

The fourth proportional to 13,746.82, 20,621.64 and 3,751.78 is: 5,628.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746.82 : 20,621.64 = 3,751.78 : x
  2. Step 2: Convert to fraction form
    13,746.82/20,621.64 = 3,751.78/x
  3. Step 3: Cross multiply
    13,746.82x = 20,621.64 × 3,751.78
  4. Step 4: Simplify right side
    13,746.82x = 77,367,778.60
  5. Step 5: Solve for x
    x = 77,367,778.60/13,746.82
  6. Step 6: Final answer
    x = 5,628.05

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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.