Home / 18,121.30-27,181.58-10,313.38

Finding the Fourth Proportional to 18,121.30, 27,181.58 and 10,313.38

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Solution

The fourth proportional to 18,121.30, 27,181.58 and 10,313.38 is: 15,469.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.30 : 27,181.58 = 10,313.38 : x
  2. Step 2: Convert to fraction form
    18,121.30/27,181.58 = 10,313.38/x
  3. Step 3: Cross multiply
    18,121.30x = 27,181.58 × 10,313.38
  4. Step 4: Simplify right side
    18,121.30x = 280,333,827.63
  5. Step 5: Solve for x
    x = 280,333,827.63/18,121.30
  6. Step 6: Final answer
    x = 15,469.86

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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.