Home / 21,282.20-29,370.33-11,850.75

Finding the Fourth Proportional to 21,282.20, 29,370.33 and 11,850.75

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Solution

The fourth proportional to 21,282.20, 29,370.33 and 11,850.75 is: 16,354.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.20 : 29,370.33 = 11,850.75 : x
  2. Step 2: Convert to fraction form
    21,282.20/29,370.33 = 11,850.75/x
  3. Step 3: Cross multiply
    21,282.20x = 29,370.33 × 11,850.75
  4. Step 4: Simplify right side
    21,282.20x = 348,060,438.25
  5. Step 5: Solve for x
    x = 348,060,438.25/21,282.20
  6. Step 6: Final answer
    x = 16,354.54

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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.