Home / 21,340.83-29,452.30-11,782.43

Finding the Fourth Proportional to 21,340.83, 29,452.30 and 11,782.43

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Solution

The fourth proportional to 21,340.83, 29,452.30 and 11,782.43 is: 16,260.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.83 : 29,452.30 = 11,782.43 : x
  2. Step 2: Convert to fraction form
    21,340.83/29,452.30 = 11,782.43/x
  3. Step 3: Cross multiply
    21,340.83x = 29,452.30 × 11,782.43
  4. Step 4: Simplify right side
    21,340.83x = 347,019,663.09
  5. Step 5: Solve for x
    x = 347,019,663.09/21,340.83
  6. Step 6: Final answer
    x = 16,260.83

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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.