Home / 21,074.50-29,083.08-11,643.94

Finding the Fourth Proportional to 21,074.50, 29,083.08 and 11,643.94

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Solution

The fourth proportional to 21,074.50, 29,083.08 and 11,643.94 is: 16,068.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.50 : 29,083.08 = 11,643.94 : x
  2. Step 2: Convert to fraction form
    21,074.50/29,083.08 = 11,643.94/x
  3. Step 3: Cross multiply
    21,074.50x = 29,083.08 × 11,643.94
  4. Step 4: Simplify right side
    21,074.50x = 338,641,638.54
  5. Step 5: Solve for x
    x = 338,641,638.54/21,074.50
  6. Step 6: Final answer
    x = 16,068.79

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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.