Home / 21,324.30-29,426.21-11,764.31

Finding the Fourth Proportional to 21,324.30, 29,426.21 and 11,764.31

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Solution

The fourth proportional to 21,324.30, 29,426.21 and 11,764.31 is: 16,234.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.30 : 29,426.21 = 11,764.31 : x
  2. Step 2: Convert to fraction form
    21,324.30/29,426.21 = 11,764.31/x
  3. Step 3: Cross multiply
    21,324.30x = 29,426.21 × 11,764.31
  4. Step 4: Simplify right side
    21,324.30x = 346,179,027.15
  5. Step 5: Solve for x
    x = 346,179,027.15/21,324.30
  6. Step 6: Final answer
    x = 16,234.02

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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.