Home / 13,555.42-20,334.77-4,788.54

Finding the Fourth Proportional to 13,555.42, 20,334.77 and 4,788.54

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Solution

The fourth proportional to 13,555.42, 20,334.77 and 4,788.54 is: 7,183.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.42 : 20,334.77 = 4,788.54 : x
  2. Step 2: Convert to fraction form
    13,555.42/20,334.77 = 4,788.54/x
  3. Step 3: Cross multiply
    13,555.42x = 20,334.77 × 4,788.54
  4. Step 4: Simplify right side
    13,555.42x = 97,373,859.54
  5. Step 5: Solve for x
    x = 97,373,859.54/13,555.42
  6. Step 6: Final answer
    x = 7,183.39

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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.