Home / 20,561.37-28,344.99-13,475.49

Finding the Fourth Proportional to 20,561.37, 28,344.99 and 13,475.49

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Solution

The fourth proportional to 20,561.37, 28,344.99 and 13,475.49 is: 18,576.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.37 : 28,344.99 = 13,475.49 : x
  2. Step 2: Convert to fraction form
    20,561.37/28,344.99 = 13,475.49/x
  3. Step 3: Cross multiply
    20,561.37x = 28,344.99 × 13,475.49
  4. Step 4: Simplify right side
    20,561.37x = 381,962,629.30
  5. Step 5: Solve for x
    x = 381,962,629.30/20,561.37
  6. Step 6: Final answer
    x = 18,576.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.