Home / 21,185.69-29,235.95-11,754.29

Finding the Fourth Proportional to 21,185.69, 29,235.95 and 11,754.29

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Solution

The fourth proportional to 21,185.69, 29,235.95 and 11,754.29 is: 16,220.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.69 : 29,235.95 = 11,754.29 : x
  2. Step 2: Convert to fraction form
    21,185.69/29,235.95 = 11,754.29/x
  3. Step 3: Cross multiply
    21,185.69x = 29,235.95 × 11,754.29
  4. Step 4: Simplify right side
    21,185.69x = 343,647,717.93
  5. Step 5: Solve for x
    x = 343,647,717.93/21,185.69
  6. Step 6: Final answer
    x = 16,220.75

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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.