Home / 13,687.44-18,765.52-13,438.32

Finding the Fourth Proportional to 13,687.44, 18,765.52 and 13,438.32

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Solution

The fourth proportional to 13,687.44, 18,765.52 and 13,438.32 is: 18,423.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.44 : 18,765.52 = 13,438.32 : x
  2. Step 2: Convert to fraction form
    13,687.44/18,765.52 = 13,438.32/x
  3. Step 3: Cross multiply
    13,687.44x = 18,765.52 × 13,438.32
  4. Step 4: Simplify right side
    13,687.44x = 252,177,062.73
  5. Step 5: Solve for x
    x = 252,177,062.73/13,687.44
  6. Step 6: Final answer
    x = 18,423.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.