Home / 12,190.40-18,286.28-3,424.63

Finding the Fourth Proportional to 12,190.40, 18,286.28 and 3,424.63

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Solution

The fourth proportional to 12,190.40, 18,286.28 and 3,424.63 is: 5,137.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.40 : 18,286.28 = 3,424.63 : x
  2. Step 2: Convert to fraction form
    12,190.40/18,286.28 = 3,424.63/x
  3. Step 3: Cross multiply
    12,190.40x = 18,286.28 × 3,424.63
  4. Step 4: Simplify right side
    12,190.40x = 62,623,743.08
  5. Step 5: Solve for x
    x = 62,623,743.08/12,190.40
  6. Step 6: Final answer
    x = 5,137.14

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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.