Home / 21,330.10-32,007.30-8,191.90

Finding the Fourth Proportional to 21,330.10, 32,007.30 and 8,191.90

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Solution

The fourth proportional to 21,330.10, 32,007.30 and 8,191.90 is: 12,292.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.10 : 32,007.30 = 8,191.90 : x
  2. Step 2: Convert to fraction form
    21,330.10/32,007.30 = 8,191.90/x
  3. Step 3: Cross multiply
    21,330.10x = 32,007.30 × 8,191.90
  4. Step 4: Simplify right side
    21,330.10x = 262,200,600.87
  5. Step 5: Solve for x
    x = 262,200,600.87/21,330.10
  6. Step 6: Final answer
    x = 12,292.52

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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.