Home / 21,540.33-29,725.13-11,980.18

Finding the Fourth Proportional to 21,540.33, 29,725.13 and 11,980.18

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Solution

The fourth proportional to 21,540.33, 29,725.13 and 11,980.18 is: 16,532.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.33 : 29,725.13 = 11,980.18 : x
  2. Step 2: Convert to fraction form
    21,540.33/29,725.13 = 11,980.18/x
  3. Step 3: Cross multiply
    21,540.33x = 29,725.13 × 11,980.18
  4. Step 4: Simplify right side
    21,540.33x = 356,112,569.00
  5. Step 5: Solve for x
    x = 356,112,569.00/21,540.33
  6. Step 6: Final answer
    x = 16,532.37

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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.