Home / 18,115.23-27,142.82-12,824.10

Finding the Fourth Proportional to 18,115.23, 27,142.82 and 12,824.10

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Solution

The fourth proportional to 18,115.23, 27,142.82 and 12,824.10 is: 19,214.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.23 : 27,142.82 = 12,824.10 : x
  2. Step 2: Convert to fraction form
    18,115.23/27,142.82 = 12,824.10/x
  3. Step 3: Cross multiply
    18,115.23x = 27,142.82 × 12,824.10
  4. Step 4: Simplify right side
    18,115.23x = 348,082,173.84
  5. Step 5: Solve for x
    x = 348,082,173.84/18,115.23
  6. Step 6: Final answer
    x = 19,214.89

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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.