Home / 13,189.55-19,786.41-4,302.81

Finding the Fourth Proportional to 13,189.55, 19,786.41 and 4,302.81

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Solution

The fourth proportional to 13,189.55, 19,786.41 and 4,302.81 is: 6,454.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.55 : 19,786.41 = 4,302.81 : x
  2. Step 2: Convert to fraction form
    13,189.55/19,786.41 = 4,302.81/x
  3. Step 3: Cross multiply
    13,189.55x = 19,786.41 × 4,302.81
  4. Step 4: Simplify right side
    13,189.55x = 85,137,162.81
  5. Step 5: Solve for x
    x = 85,137,162.81/13,189.55
  6. Step 6: Final answer
    x = 6,454.90

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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.