Home / 21,236.76-29,308.50-11,806.20

Finding the Fourth Proportional to 21,236.76, 29,308.50 and 11,806.20

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Solution

The fourth proportional to 21,236.76, 29,308.50 and 11,806.20 is: 16,293.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.76 : 29,308.50 = 11,806.20 : x
  2. Step 2: Convert to fraction form
    21,236.76/29,308.50 = 11,806.20/x
  3. Step 3: Cross multiply
    21,236.76x = 29,308.50 × 11,806.20
  4. Step 4: Simplify right side
    21,236.76x = 346,022,012.70
  5. Step 5: Solve for x
    x = 346,022,012.70/21,236.76
  6. Step 6: Final answer
    x = 16,293.54

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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.