Home / 21,111.09-29,133.07-11,551.16

Finding the Fourth Proportional to 21,111.09, 29,133.07 and 11,551.16

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Solution

The fourth proportional to 21,111.09, 29,133.07 and 11,551.16 is: 15,940.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,111.09 : 29,133.07 = 11,551.16 : x
  2. Step 2: Convert to fraction form
    21,111.09/29,133.07 = 11,551.16/x
  3. Step 3: Cross multiply
    21,111.09x = 29,133.07 × 11,551.16
  4. Step 4: Simplify right side
    21,111.09x = 336,520,796.82
  5. Step 5: Solve for x
    x = 336,520,796.82/21,111.09
  6. Step 6: Final answer
    x = 15,940.48

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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.