Home / 21,385.44-29,511.32-11,955.82

Finding the Fourth Proportional to 21,385.44, 29,511.32 and 11,955.82

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Solution

The fourth proportional to 21,385.44, 29,511.32 and 11,955.82 is: 16,498.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,385.44 : 29,511.32 = 11,955.82 : x
  2. Step 2: Convert to fraction form
    21,385.44/29,511.32 = 11,955.82/x
  3. Step 3: Cross multiply
    21,385.44x = 29,511.32 × 11,955.82
  4. Step 4: Simplify right side
    21,385.44x = 352,832,029.88
  5. Step 5: Solve for x
    x = 352,832,029.88/21,385.44
  6. Step 6: Final answer
    x = 16,498.70

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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.