Home / 18,299.72-27,431.13-13,907.95

Finding the Fourth Proportional to 18,299.72, 27,431.13 and 13,907.95

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Solution

The fourth proportional to 18,299.72, 27,431.13 and 13,907.95 is: 20,847.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.72 : 27,431.13 = 13,907.95 : x
  2. Step 2: Convert to fraction form
    18,299.72/27,431.13 = 13,907.95/x
  3. Step 3: Cross multiply
    18,299.72x = 27,431.13 × 13,907.95
  4. Step 4: Simplify right side
    18,299.72x = 381,510,883.24
  5. Step 5: Solve for x
    x = 381,510,883.24/18,299.72
  6. Step 6: Final answer
    x = 20,847.91

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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.