Home / 12,220.56-18,336.60-4,427.28

Finding the Fourth Proportional to 12,220.56, 18,336.60 and 4,427.28

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Solution

The fourth proportional to 12,220.56, 18,336.60 and 4,427.28 is: 6,643.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.56 : 18,336.60 = 4,427.28 : x
  2. Step 2: Convert to fraction form
    12,220.56/18,336.60 = 4,427.28/x
  3. Step 3: Cross multiply
    12,220.56x = 18,336.60 × 4,427.28
  4. Step 4: Simplify right side
    12,220.56x = 81,181,262.45
  5. Step 5: Solve for x
    x = 81,181,262.45/12,220.56
  6. Step 6: Final answer
    x = 6,643.01

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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.