Home / 12,228.41-18,331.61-4,431.75

Finding the Fourth Proportional to 12,228.41, 18,331.61 and 4,431.75

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Solution

The fourth proportional to 12,228.41, 18,331.61 and 4,431.75 is: 6,643.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.41 : 18,331.61 = 4,431.75 : x
  2. Step 2: Convert to fraction form
    12,228.41/18,331.61 = 4,431.75/x
  3. Step 3: Cross multiply
    12,228.41x = 18,331.61 × 4,431.75
  4. Step 4: Simplify right side
    12,228.41x = 81,241,090.46
  5. Step 5: Solve for x
    x = 81,241,090.46/12,228.41
  6. Step 6: Final answer
    x = 6,643.64

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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.