Home / 12,150.49-18,231.03-4,258.68

Finding the Fourth Proportional to 12,150.49, 18,231.03 and 4,258.68

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Solution

The fourth proportional to 12,150.49, 18,231.03 and 4,258.68 is: 6,389.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,150.49 : 18,231.03 = 4,258.68 : x
  2. Step 2: Convert to fraction form
    12,150.49/18,231.03 = 4,258.68/x
  3. Step 3: Cross multiply
    12,150.49x = 18,231.03 × 4,258.68
  4. Step 4: Simplify right side
    12,150.49x = 77,640,101.55
  5. Step 5: Solve for x
    x = 77,640,101.55/12,150.49
  6. Step 6: Final answer
    x = 6,389.87

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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.