Home / 31,170.13-43,028.94-19,855.14

Finding the Fourth Proportional to 31,170.13, 43,028.94 and 19,855.14

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Solution

The fourth proportional to 31,170.13, 43,028.94 and 19,855.14 is: 27,409.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,170.13 : 43,028.94 = 19,855.14 : x
  2. Step 2: Convert to fraction form
    31,170.13/43,028.94 = 19,855.14/x
  3. Step 3: Cross multiply
    31,170.13x = 43,028.94 × 19,855.14
  4. Step 4: Simplify right side
    31,170.13x = 854,345,313.33
  5. Step 5: Solve for x
    x = 854,345,313.33/31,170.13
  6. Step 6: Final answer
    x = 27,409.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.