Home / 21,018.35-29,004.44-11,458.03

Finding the Fourth Proportional to 21,018.35, 29,004.44 and 11,458.03

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Solution

The fourth proportional to 21,018.35, 29,004.44 and 11,458.03 is: 15,811.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.35 : 29,004.44 = 11,458.03 : x
  2. Step 2: Convert to fraction form
    21,018.35/29,004.44 = 11,458.03/x
  3. Step 3: Cross multiply
    21,018.35x = 29,004.44 × 11,458.03
  4. Step 4: Simplify right side
    21,018.35x = 332,333,743.65
  5. Step 5: Solve for x
    x = 332,333,743.65/21,018.35
  6. Step 6: Final answer
    x = 15,811.60

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1.5x scale

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.