Home / 21,022.51-29,009.60-11,825.44

Finding the Fourth Proportional to 21,022.51, 29,009.60 and 11,825.44

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Solution

The fourth proportional to 21,022.51, 29,009.60 and 11,825.44 is: 16,318.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022.51 : 29,009.60 = 11,825.44 : x
  2. Step 2: Convert to fraction form
    21,022.51/29,009.60 = 11,825.44/x
  3. Step 3: Cross multiply
    21,022.51x = 29,009.60 × 11,825.44
  4. Step 4: Simplify right side
    21,022.51x = 343,051,284.22
  5. Step 5: Solve for x
    x = 343,051,284.22/21,022.51
  6. Step 6: Final answer
    x = 16,318.28

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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.