Home / 13,540.56-20,305.44-5,215.92

Finding the Fourth Proportional to 13,540.56, 20,305.44 and 5,215.92

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Solution

The fourth proportional to 13,540.56, 20,305.44 and 5,215.92 is: 7,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.56 : 20,305.44 = 5,215.92 : x
  2. Step 2: Convert to fraction form
    13,540.56/20,305.44 = 5,215.92/x
  3. Step 3: Cross multiply
    13,540.56x = 20,305.44 × 5,215.92
  4. Step 4: Simplify right side
    13,540.56x = 105,911,550.60
  5. Step 5: Solve for x
    x = 105,911,550.60/13,540.56
  6. Step 6: Final answer
    x = 7,821.80

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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.