Home / 23,057.88-31,820.46-12,986.64

Finding the Fourth Proportional to 23,057.88, 31,820.46 and 12,986.64

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Solution

The fourth proportional to 23,057.88, 31,820.46 and 12,986.64 is: 17,921.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,057.88 : 31,820.46 = 12,986.64 : x
  2. Step 2: Convert to fraction form
    23,057.88/31,820.46 = 12,986.64/x
  3. Step 3: Cross multiply
    23,057.88x = 31,820.46 × 12,986.64
  4. Step 4: Simplify right side
    23,057.88x = 413,240,858.65
  5. Step 5: Solve for x
    x = 413,240,858.65/23,057.88
  6. Step 6: Final answer
    x = 17,921.89

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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.