Home / 18,729.63-25,855.20-11,660.76

Finding the Fourth Proportional to 18,729.63, 25,855.20 and 11,660.76

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Solution

The fourth proportional to 18,729.63, 25,855.20 and 11,660.76 is: 16,097.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.63 : 25,855.20 = 11,660.76 : x
  2. Step 2: Convert to fraction form
    18,729.63/25,855.20 = 11,660.76/x
  3. Step 3: Cross multiply
    18,729.63x = 25,855.20 × 11,660.76
  4. Step 4: Simplify right side
    18,729.63x = 301,491,281.95
  5. Step 5: Solve for x
    x = 301,491,281.95/18,729.63
  6. Step 6: Final answer
    x = 16,097.02

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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.