Home / 18,729.09-28,118.34-17,181.79

Finding the Fourth Proportional to 18,729.09, 28,118.34 and 17,181.79

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Solution

The fourth proportional to 18,729.09, 28,118.34 and 17,181.79 is: 25,795.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.09 : 28,118.34 = 17,181.79 : x
  2. Step 2: Convert to fraction form
    18,729.09/28,118.34 = 17,181.79/x
  3. Step 3: Cross multiply
    18,729.09x = 28,118.34 × 17,181.79
  4. Step 4: Simplify right side
    18,729.09x = 483,123,342.73
  5. Step 5: Solve for x
    x = 483,123,342.73/18,729.09
  6. Step 6: Final answer
    x = 25,795.35

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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.