Home / 20,969.16-31,447.46-6,174.51

Finding the Fourth Proportional to 20,969.16, 31,447.46 and 6,174.51

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Solution

The fourth proportional to 20,969.16, 31,447.46 and 6,174.51 is: 9,259.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969.16 : 31,447.46 = 6,174.51 : x
  2. Step 2: Convert to fraction form
    20,969.16/31,447.46 = 6,174.51/x
  3. Step 3: Cross multiply
    20,969.16x = 31,447.46 × 6,174.51
  4. Step 4: Simplify right side
    20,969.16x = 194,172,625.37
  5. Step 5: Solve for x
    x = 194,172,625.37/20,969.16
  6. Step 6: Final answer
    x = 9,259.91

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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.