Home / 18,431.40-27,647.10-8,589.90

Finding the Fourth Proportional to 18,431.40, 27,647.10 and 8,589.90

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Solution

The fourth proportional to 18,431.40, 27,647.10 and 8,589.90 is: 12,884.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,431.40 : 27,647.10 = 8,589.90 : x
  2. Step 2: Convert to fraction form
    18,431.40/27,647.10 = 8,589.90/x
  3. Step 3: Cross multiply
    18,431.40x = 27,647.10 × 8,589.90
  4. Step 4: Simplify right side
    18,431.40x = 237,485,824.29
  5. Step 5: Solve for x
    x = 237,485,824.29/18,431.40
  6. Step 6: Final answer
    x = 12,884.85

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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.