Home / 21,766.64-32,668.96-12,425.36

Finding the Fourth Proportional to 21,766.64, 32,668.96 and 12,425.36

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Solution

The fourth proportional to 21,766.64, 32,668.96 and 12,425.36 is: 18,648.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,766.64 : 32,668.96 = 12,425.36 : x
  2. Step 2: Convert to fraction form
    21,766.64/32,668.96 = 12,425.36/x
  3. Step 3: Cross multiply
    21,766.64x = 32,668.96 × 12,425.36
  4. Step 4: Simplify right side
    21,766.64x = 405,923,588.83
  5. Step 5: Solve for x
    x = 405,923,588.83/21,766.64
  6. Step 6: Final answer
    x = 18,648.89

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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.