Home / 13,189.91-19,786.40-4,638.72

Finding the Fourth Proportional to 13,189.91, 19,786.40 and 4,638.72

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Solution

The fourth proportional to 13,189.91, 19,786.40 and 4,638.72 is: 6,958.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.91 : 19,786.40 = 4,638.72 : x
  2. Step 2: Convert to fraction form
    13,189.91/19,786.40 = 4,638.72/x
  3. Step 3: Cross multiply
    13,189.91x = 19,786.40 × 4,638.72
  4. Step 4: Simplify right side
    13,189.91x = 91,783,546.21
  5. Step 5: Solve for x
    x = 91,783,546.21/13,189.91
  6. Step 6: Final answer
    x = 6,958.62

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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.