Home / 21,238.88-29,309.65-11,809.26

Finding the Fourth Proportional to 21,238.88, 29,309.65 and 11,809.26

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Solution

The fourth proportional to 21,238.88, 29,309.65 and 11,809.26 is: 16,296.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,238.88 : 29,309.65 = 11,809.26 : x
  2. Step 2: Convert to fraction form
    21,238.88/29,309.65 = 11,809.26/x
  3. Step 3: Cross multiply
    21,238.88x = 29,309.65 × 11,809.26
  4. Step 4: Simplify right side
    21,238.88x = 346,125,247.84
  5. Step 5: Solve for x
    x = 346,125,247.84/21,238.88
  6. Step 6: Final answer
    x = 16,296.78

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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.