Home / 21,172.88-29,218.24-11,741.60

Finding the Fourth Proportional to 21,172.88, 29,218.24 and 11,741.60

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Solution

The fourth proportional to 21,172.88, 29,218.24 and 11,741.60 is: 16,203.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.88 : 29,218.24 = 11,741.60 : x
  2. Step 2: Convert to fraction form
    21,172.88/29,218.24 = 11,741.60/x
  3. Step 3: Cross multiply
    21,172.88x = 29,218.24 × 11,741.60
  4. Step 4: Simplify right side
    21,172.88x = 343,068,886.78
  5. Step 5: Solve for x
    x = 343,068,886.78/21,172.88
  6. Step 6: Final answer
    x = 16,203.22

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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.