Home / 13,431.21-20,146.89-4,546.63

Finding the Fourth Proportional to 13,431.21, 20,146.89 and 4,546.63

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Solution

The fourth proportional to 13,431.21, 20,146.89 and 4,546.63 is: 6,819.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.21 : 20,146.89 = 4,546.63 : x
  2. Step 2: Convert to fraction form
    13,431.21/20,146.89 = 4,546.63/x
  3. Step 3: Cross multiply
    13,431.21x = 20,146.89 × 4,546.63
  4. Step 4: Simplify right side
    13,431.21x = 91,600,454.48
  5. Step 5: Solve for x
    x = 91,600,454.48/13,431.21
  6. Step 6: Final answer
    x = 6,819.97

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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.