Home / 12,190.73-18,286.11-4,291.40

Finding the Fourth Proportional to 12,190.73, 18,286.11 and 4,291.40

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Solution

The fourth proportional to 12,190.73, 18,286.11 and 4,291.40 is: 6,437.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.73 : 18,286.11 = 4,291.40 : x
  2. Step 2: Convert to fraction form
    12,190.73/18,286.11 = 4,291.40/x
  3. Step 3: Cross multiply
    12,190.73x = 18,286.11 × 4,291.40
  4. Step 4: Simplify right side
    12,190.73x = 78,473,012.45
  5. Step 5: Solve for x
    x = 78,473,012.45/12,190.73
  6. Step 6: Final answer
    x = 6,437.11

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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.