Home / 21,110.24-31,668.60-7,256

Finding the Fourth Proportional to 21,110.24, 31,668.60 and 7,256

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Solution

The fourth proportional to 21,110.24, 31,668.60 and 7,256 is: 10,885.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.24 : 31,668.60 = 7,256 : x
  2. Step 2: Convert to fraction form
    21,110.24/31,668.60 = 7,256/x
  3. Step 3: Cross multiply
    21,110.24x = 31,668.60 × 7,256
  4. Step 4: Simplify right side
    21,110.24x = 229,787,361.60
  5. Step 5: Solve for x
    x = 229,787,361.60/21,110.24
  6. Step 6: Final answer
    x = 10,885.11

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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.