Home / 18,516.21-25,525.79-13,201.80

Finding the Fourth Proportional to 18,516.21, 25,525.79 and 13,201.80

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Solution

The fourth proportional to 18,516.21, 25,525.79 and 13,201.80 is: 18,199.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,516.21 : 25,525.79 = 13,201.80 : x
  2. Step 2: Convert to fraction form
    18,516.21/25,525.79 = 13,201.80/x
  3. Step 3: Cross multiply
    18,516.21x = 25,525.79 × 13,201.80
  4. Step 4: Simplify right side
    18,516.21x = 336,986,374.42
  5. Step 5: Solve for x
    x = 336,986,374.42/18,516.21
  6. Step 6: Final answer
    x = 18,199.53

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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.