Home / 13,555.35-20,333.03-7,716.87

Finding the Fourth Proportional to 13,555.35, 20,333.03 and 7,716.87

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Solution

The fourth proportional to 13,555.35, 20,333.03 and 7,716.87 is: 11,575.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.35 : 20,333.03 = 7,716.87 : x
  2. Step 2: Convert to fraction form
    13,555.35/20,333.03 = 7,716.87/x
  3. Step 3: Cross multiply
    13,555.35x = 20,333.03 × 7,716.87
  4. Step 4: Simplify right side
    13,555.35x = 156,907,310.63
  5. Step 5: Solve for x
    x = 156,907,310.63/13,555.35
  6. Step 6: Final answer
    x = 11,575.31

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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.