Home / 21,721.26-29,975.32-11,785.26

Finding the Fourth Proportional to 21,721.26, 29,975.32 and 11,785.26

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Solution

The fourth proportional to 21,721.26, 29,975.32 and 11,785.26 is: 16,263.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,721.26 : 29,975.32 = 11,785.26 : x
  2. Step 2: Convert to fraction form
    21,721.26/29,975.32 = 11,785.26/x
  3. Step 3: Cross multiply
    21,721.26x = 29,975.32 × 11,785.26
  4. Step 4: Simplify right side
    21,721.26x = 353,266,939.78
  5. Step 5: Solve for x
    x = 353,266,939.78/21,721.26
  6. Step 6: Final answer
    x = 16,263.65

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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.