Home / 13,199.76-19,799.56-5,408.56

Finding the Fourth Proportional to 13,199.76, 19,799.56 and 5,408.56

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Solution

The fourth proportional to 13,199.76, 19,799.56 and 5,408.56 is: 8,112.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,199.76 : 19,799.56 = 5,408.56 : x
  2. Step 2: Convert to fraction form
    13,199.76/19,799.56 = 5,408.56/x
  3. Step 3: Cross multiply
    13,199.76x = 19,799.56 × 5,408.56
  4. Step 4: Simplify right side
    13,199.76x = 107,087,108.23
  5. Step 5: Solve for x
    x = 107,087,108.23/13,199.76
  6. Step 6: Final answer
    x = 8,112.81

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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.