Home / 15,221.03-21,004.24-8,505.34

Finding the Fourth Proportional to 15,221.03, 21,004.24 and 8,505.34

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Solution

The fourth proportional to 15,221.03, 21,004.24 and 8,505.34 is: 11,736.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,221.03 : 21,004.24 = 8,505.34 : x
  2. Step 2: Convert to fraction form
    15,221.03/21,004.24 = 8,505.34/x
  3. Step 3: Cross multiply
    15,221.03x = 21,004.24 × 8,505.34
  4. Step 4: Simplify right side
    15,221.03x = 178,648,231.07
  5. Step 5: Solve for x
    x = 178,648,231.07/15,221.03
  6. Step 6: Final answer
    x = 11,736.94

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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.