Home / 21,160.18-29,201.97-11,728.75

Finding the Fourth Proportional to 21,160.18, 29,201.97 and 11,728.75

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Solution

The fourth proportional to 21,160.18, 29,201.97 and 11,728.75 is: 16,186.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.18 : 29,201.97 = 11,728.75 : x
  2. Step 2: Convert to fraction form
    21,160.18/29,201.97 = 11,728.75/x
  3. Step 3: Cross multiply
    21,160.18x = 29,201.97 × 11,728.75
  4. Step 4: Simplify right side
    21,160.18x = 342,502,605.64
  5. Step 5: Solve for x
    x = 342,502,605.64/21,160.18
  6. Step 6: Final answer
    x = 16,186.19

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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.