Home / 18,785.52-28,156.41-10,977.84

Finding the Fourth Proportional to 18,785.52, 28,156.41 and 10,977.84

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Solution

The fourth proportional to 18,785.52, 28,156.41 and 10,977.84 is: 16,453.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,785.52 : 28,156.41 = 10,977.84 : x
  2. Step 2: Convert to fraction form
    18,785.52/28,156.41 = 10,977.84/x
  3. Step 3: Cross multiply
    18,785.52x = 28,156.41 × 10,977.84
  4. Step 4: Simplify right side
    18,785.52x = 309,096,563.95
  5. Step 5: Solve for x
    x = 309,096,563.95/18,785.52
  6. Step 6: Final answer
    x = 16,453.98

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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.