Home / 13,771.86-20,647.53-5,445.06

Finding the Fourth Proportional to 13,771.86, 20,647.53 and 5,445.06

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Solution

The fourth proportional to 13,771.86, 20,647.53 and 5,445.06 is: 8,163.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771.86 : 20,647.53 = 5,445.06 : x
  2. Step 2: Convert to fraction form
    13,771.86/20,647.53 = 5,445.06/x
  3. Step 3: Cross multiply
    13,771.86x = 20,647.53 × 5,445.06
  4. Step 4: Simplify right side
    13,771.86x = 112,427,039.70
  5. Step 5: Solve for x
    x = 112,427,039.70/13,771.86
  6. Step 6: Final answer
    x = 8,163.53

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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.