Home / 21,185.23-29,235.63-11,753.79

Finding the Fourth Proportional to 21,185.23, 29,235.63 and 11,753.79

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Solution

The fourth proportional to 21,185.23, 29,235.63 and 11,753.79 is: 16,220.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.23 : 29,235.63 = 11,753.79 : x
  2. Step 2: Convert to fraction form
    21,185.23/29,235.63 = 11,753.79/x
  3. Step 3: Cross multiply
    21,185.23x = 29,235.63 × 11,753.79
  4. Step 4: Simplify right side
    21,185.23x = 343,629,455.54
  5. Step 5: Solve for x
    x = 343,629,455.54/21,185.23
  6. Step 6: Final answer
    x = 16,220.24

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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.