Home / 21,189.93-29,240.64-11,757.75

Finding the Fourth Proportional to 21,189.93, 29,240.64 and 11,757.75

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Solution

The fourth proportional to 21,189.93, 29,240.64 and 11,757.75 is: 16,224.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.93 : 29,240.64 = 11,757.75 : x
  2. Step 2: Convert to fraction form
    21,189.93/29,240.64 = 11,757.75/x
  3. Step 3: Cross multiply
    21,189.93x = 29,240.64 × 11,757.75
  4. Step 4: Simplify right side
    21,189.93x = 343,804,134.96
  5. Step 5: Solve for x
    x = 343,804,134.96/21,189.93
  6. Step 6: Final answer
    x = 16,224.88

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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.