Home / 12,748.12-19,122.16-8,741.56

Finding the Fourth Proportional to 12,748.12, 19,122.16 and 8,741.56

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Solution

The fourth proportional to 12,748.12, 19,122.16 and 8,741.56 is: 13,112.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,748.12 : 19,122.16 = 8,741.56 : x
  2. Step 2: Convert to fraction form
    12,748.12/19,122.16 = 8,741.56/x
  3. Step 3: Cross multiply
    12,748.12x = 19,122.16 × 8,741.56
  4. Step 4: Simplify right side
    12,748.12x = 167,157,508.97
  5. Step 5: Solve for x
    x = 167,157,508.97/12,748.12
  6. Step 6: Final answer
    x = 13,112.33

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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.