Home / 21,387.36-29,513.82-11,826.66

Finding the Fourth Proportional to 21,387.36, 29,513.82 and 11,826.66

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Solution

The fourth proportional to 21,387.36, 29,513.82 and 11,826.66 is: 16,320.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387.36 : 29,513.82 = 11,826.66 : x
  2. Step 2: Convert to fraction form
    21,387.36/29,513.82 = 11,826.66/x
  3. Step 3: Cross multiply
    21,387.36x = 29,513.82 × 11,826.66
  4. Step 4: Simplify right side
    21,387.36x = 349,049,914.44
  5. Step 5: Solve for x
    x = 349,049,914.44/21,387.36
  6. Step 6: Final answer
    x = 16,320.38

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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.