Home / 21,328.10-32,004.30-8,189.90

Finding the Fourth Proportional to 21,328.10, 32,004.30 and 8,189.90

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Solution

The fourth proportional to 21,328.10, 32,004.30 and 8,189.90 is: 12,289.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.10 : 32,004.30 = 8,189.90 : x
  2. Step 2: Convert to fraction form
    21,328.10/32,004.30 = 8,189.90/x
  3. Step 3: Cross multiply
    21,328.10x = 32,004.30 × 8,189.90
  4. Step 4: Simplify right side
    21,328.10x = 262,112,016.57
  5. Step 5: Solve for x
    x = 262,112,016.57/21,328.10
  6. Step 6: Final answer
    x = 12,289.52

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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.