Home / 20,965.13-31,447.79-6,174.23

Finding the Fourth Proportional to 20,965.13, 31,447.79 and 6,174.23

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Solution

The fourth proportional to 20,965.13, 31,447.79 and 6,174.23 is: 9,261.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965.13 : 31,447.79 = 6,174.23 : x
  2. Step 2: Convert to fraction form
    20,965.13/31,447.79 = 6,174.23/x
  3. Step 3: Cross multiply
    20,965.13x = 31,447.79 × 6,174.23
  4. Step 4: Simplify right side
    20,965.13x = 194,165,758.22
  5. Step 5: Solve for x
    x = 194,165,758.22/20,965.13
  6. Step 6: Final answer
    x = 9,261.37

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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.