Home / 21,939.24-32,905.56-8,085

Finding the Fourth Proportional to 21,939.24, 32,905.56 and 8,085

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Solution

The fourth proportional to 21,939.24, 32,905.56 and 8,085 is: 12,126.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.24 : 32,905.56 = 8,085 : x
  2. Step 2: Convert to fraction form
    21,939.24/32,905.56 = 8,085/x
  3. Step 3: Cross multiply
    21,939.24x = 32,905.56 × 8,085
  4. Step 4: Simplify right side
    21,939.24x = 266,041,452.60
  5. Step 5: Solve for x
    x = 266,041,452.60/21,939.24
  6. Step 6: Final answer
    x = 12,126.28

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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.