Home / 13,776.36-20,662.44-4,415.39

Finding the Fourth Proportional to 13,776.36, 20,662.44 and 4,415.39

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Solution

The fourth proportional to 13,776.36, 20,662.44 and 4,415.39 is: 6,622.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776.36 : 20,662.44 = 4,415.39 : x
  2. Step 2: Convert to fraction form
    13,776.36/20,662.44 = 4,415.39/x
  3. Step 3: Cross multiply
    13,776.36x = 20,662.44 × 4,415.39
  4. Step 4: Simplify right side
    13,776.36x = 91,232,730.95
  5. Step 5: Solve for x
    x = 91,232,730.95/13,776.36
  6. Step 6: Final answer
    x = 6,622.41

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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.