Home / 21,034.38-31,556.59-11,171.47

Finding the Fourth Proportional to 21,034.38, 31,556.59 and 11,171.47

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Solution

The fourth proportional to 21,034.38, 31,556.59 and 11,171.47 is: 16,759.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,034.38 : 31,556.59 = 11,171.47 : x
  2. Step 2: Convert to fraction form
    21,034.38/31,556.59 = 11,171.47/x
  3. Step 3: Cross multiply
    21,034.38x = 31,556.59 × 11,171.47
  4. Step 4: Simplify right side
    21,034.38x = 352,533,450.84
  5. Step 5: Solve for x
    x = 352,533,450.84/21,034.38
  6. Step 6: Final answer
    x = 16,759.87

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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.