Home / 13,612.64-20,418.96-3,751.60

Finding the Fourth Proportional to 13,612.64, 20,418.96 and 3,751.60

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Solution

The fourth proportional to 13,612.64, 20,418.96 and 3,751.60 is: 5,627.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.64 : 20,418.96 = 3,751.60 : x
  2. Step 2: Convert to fraction form
    13,612.64/20,418.96 = 3,751.60/x
  3. Step 3: Cross multiply
    13,612.64x = 20,418.96 × 3,751.60
  4. Step 4: Simplify right side
    13,612.64x = 76,603,770.34
  5. Step 5: Solve for x
    x = 76,603,770.34/13,612.64
  6. Step 6: Final answer
    x = 5,627.40

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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.