Home / 21,636.75-29,858.72-11,700.75

Finding the Fourth Proportional to 21,636.75, 29,858.72 and 11,700.75

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Solution

The fourth proportional to 21,636.75, 29,858.72 and 11,700.75 is: 16,147.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,636.75 : 29,858.72 = 11,700.75 : x
  2. Step 2: Convert to fraction form
    21,636.75/29,858.72 = 11,700.75/x
  3. Step 3: Cross multiply
    21,636.75x = 29,858.72 × 11,700.75
  4. Step 4: Simplify right side
    21,636.75x = 349,369,418.04
  5. Step 5: Solve for x
    x = 349,369,418.04/21,636.75
  6. Step 6: Final answer
    x = 16,147.04

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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.