Home / 21,172.80-29,216.40-11,741.16

Finding the Fourth Proportional to 21,172.80, 29,216.40 and 11,741.16

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Solution

The fourth proportional to 21,172.80, 29,216.40 and 11,741.16 is: 16,201.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.80 : 29,216.40 = 11,741.16 : x
  2. Step 2: Convert to fraction form
    21,172.80/29,216.40 = 11,741.16/x
  3. Step 3: Cross multiply
    21,172.80x = 29,216.40 × 11,741.16
  4. Step 4: Simplify right side
    21,172.80x = 343,034,427.02
  5. Step 5: Solve for x
    x = 343,034,427.02/21,172.80
  6. Step 6: Final answer
    x = 16,201.66

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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.