Home / 13,845.72-20,777.28-7,276.56

Finding the Fourth Proportional to 13,845.72, 20,777.28 and 7,276.56

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Solution

The fourth proportional to 13,845.72, 20,777.28 and 7,276.56 is: 10,919.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.72 : 20,777.28 = 7,276.56 : x
  2. Step 2: Convert to fraction form
    13,845.72/20,777.28 = 7,276.56/x
  3. Step 3: Cross multiply
    13,845.72x = 20,777.28 × 7,276.56
  4. Step 4: Simplify right side
    13,845.72x = 151,187,124.56
  5. Step 5: Solve for x
    x = 151,187,124.56/13,845.72
  6. Step 6: Final answer
    x = 10,919.41

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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.