Home / 21,386.33-29,511.94-11,825.66

Finding the Fourth Proportional to 21,386.33, 29,511.94 and 11,825.66

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Solution

The fourth proportional to 21,386.33, 29,511.94 and 11,825.66 is: 16,318.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,386.33 : 29,511.94 = 11,825.66 : x
  2. Step 2: Convert to fraction form
    21,386.33/29,511.94 = 11,825.66/x
  3. Step 3: Cross multiply
    21,386.33x = 29,511.94 × 11,825.66
  4. Step 4: Simplify right side
    21,386.33x = 348,998,212.60
  5. Step 5: Solve for x
    x = 348,998,212.60/21,386.33
  6. Step 6: Final answer
    x = 16,318.75

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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.