Home / 21,945.08-32,902.26-8,090.36

Finding the Fourth Proportional to 21,945.08, 32,902.26 and 8,090.36

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Solution

The fourth proportional to 21,945.08, 32,902.26 and 8,090.36 is: 12,129.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,945.08 : 32,902.26 = 8,090.36 : x
  2. Step 2: Convert to fraction form
    21,945.08/32,902.26 = 8,090.36/x
  3. Step 3: Cross multiply
    21,945.08x = 32,902.26 × 8,090.36
  4. Step 4: Simplify right side
    21,945.08x = 266,191,128.21
  5. Step 5: Solve for x
    x = 266,191,128.21/21,945.08
  6. Step 6: Final answer
    x = 12,129.88

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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.