Home / 21,189.05-29,240.86-11,757.60

Finding the Fourth Proportional to 21,189.05, 29,240.86 and 11,757.60

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Solution

The fourth proportional to 21,189.05, 29,240.86 and 11,757.60 is: 16,225.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.05 : 29,240.86 = 11,757.60 : x
  2. Step 2: Convert to fraction form
    21,189.05/29,240.86 = 11,757.60/x
  3. Step 3: Cross multiply
    21,189.05x = 29,240.86 × 11,757.60
  4. Step 4: Simplify right side
    21,189.05x = 343,802,335.54
  5. Step 5: Solve for x
    x = 343,802,335.54/21,189.05
  6. Step 6: Final answer
    x = 16,225.47

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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.