Home / 21,121.26-31,653.90-11,239.26

Finding the Fourth Proportional to 21,121.26, 31,653.90 and 11,239.26

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Solution

The fourth proportional to 21,121.26, 31,653.90 and 11,239.26 is: 16,844.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,121.26 : 31,653.90 = 11,239.26 : x
  2. Step 2: Convert to fraction form
    21,121.26/31,653.90 = 11,239.26/x
  3. Step 3: Cross multiply
    21,121.26x = 31,653.90 × 11,239.26
  4. Step 4: Simplify right side
    21,121.26x = 355,766,412.11
  5. Step 5: Solve for x
    x = 355,766,412.11/21,121.26
  6. Step 6: Final answer
    x = 16,844.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.