Home / 12,630.20-18,945.36-3,865.10

Finding the Fourth Proportional to 12,630.20, 18,945.36 and 3,865.10

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Solution

The fourth proportional to 12,630.20, 18,945.36 and 3,865.10 is: 5,797.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.20 : 18,945.36 = 3,865.10 : x
  2. Step 2: Convert to fraction form
    12,630.20/18,945.36 = 3,865.10/x
  3. Step 3: Cross multiply
    12,630.20x = 18,945.36 × 3,865.10
  4. Step 4: Simplify right side
    12,630.20x = 73,225,710.94
  5. Step 5: Solve for x
    x = 73,225,710.94/12,630.20
  6. Step 6: Final answer
    x = 5,797.67

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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.