Home / 21,149.62-29,186.49-11,718.34

Finding the Fourth Proportional to 21,149.62, 29,186.49 and 11,718.34

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Solution

The fourth proportional to 21,149.62, 29,186.49 and 11,718.34 is: 16,171.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.62 : 29,186.49 = 11,718.34 : x
  2. Step 2: Convert to fraction form
    21,149.62/29,186.49 = 11,718.34/x
  3. Step 3: Cross multiply
    21,149.62x = 29,186.49 × 11,718.34
  4. Step 4: Simplify right side
    21,149.62x = 342,017,213.23
  5. Step 5: Solve for x
    x = 342,017,213.23/21,149.62
  6. Step 6: Final answer
    x = 16,171.32

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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.