Home / 21,299.22-29,393.12-11,739.45

Finding the Fourth Proportional to 21,299.22, 29,393.12 and 11,739.45

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Solution

The fourth proportional to 21,299.22, 29,393.12 and 11,739.45 is: 16,200.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,299.22 : 29,393.12 = 11,739.45 : x
  2. Step 2: Convert to fraction form
    21,299.22/29,393.12 = 11,739.45/x
  3. Step 3: Cross multiply
    21,299.22x = 29,393.12 × 11,739.45
  4. Step 4: Simplify right side
    21,299.22x = 345,059,003.89
  5. Step 5: Solve for x
    x = 345,059,003.89/21,299.22
  6. Step 6: Final answer
    x = 16,200.55

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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.