Home / 21,174.94-31,754.33-7,131.19

Finding the Fourth Proportional to 21,174.94, 31,754.33 and 7,131.19

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Solution

The fourth proportional to 21,174.94, 31,754.33 and 7,131.19 is: 10,694.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.94 : 31,754.33 = 7,131.19 : x
  2. Step 2: Convert to fraction form
    21,174.94/31,754.33 = 7,131.19/x
  3. Step 3: Cross multiply
    21,174.94x = 31,754.33 × 7,131.19
  4. Step 4: Simplify right side
    21,174.94x = 226,446,045.51
  5. Step 5: Solve for x
    x = 226,446,045.51/21,174.94
  6. Step 6: Final answer
    x = 10,694.06

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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.