Home / 13,020.61-19,540.94-6,782.20

Finding the Fourth Proportional to 13,020.61, 19,540.94 and 6,782.20

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Solution

The fourth proportional to 13,020.61, 19,540.94 and 6,782.20 is: 10,178.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.61 : 19,540.94 = 6,782.20 : x
  2. Step 2: Convert to fraction form
    13,020.61/19,540.94 = 6,782.20/x
  3. Step 3: Cross multiply
    13,020.61x = 19,540.94 × 6,782.20
  4. Step 4: Simplify right side
    13,020.61x = 132,530,563.27
  5. Step 5: Solve for x
    x = 132,530,563.27/13,020.61
  6. Step 6: Final answer
    x = 10,178.52

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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.