Home / 13,451.22-18,559.64-8,145.92

Finding the Fourth Proportional to 13,451.22, 18,559.64 and 8,145.92

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Solution

The fourth proportional to 13,451.22, 18,559.64 and 8,145.92 is: 11,239.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.22 : 18,559.64 = 8,145.92 : x
  2. Step 2: Convert to fraction form
    13,451.22/18,559.64 = 8,145.92/x
  3. Step 3: Cross multiply
    13,451.22x = 18,559.64 × 8,145.92
  4. Step 4: Simplify right side
    13,451.22x = 151,185,342.67
  5. Step 5: Solve for x
    x = 151,185,342.67/13,451.22
  6. Step 6: Final answer
    x = 11,239.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.