Home / 21,217.89-29,281.73-11,786.25

Finding the Fourth Proportional to 21,217.89, 29,281.73 and 11,786.25

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Solution

The fourth proportional to 21,217.89, 29,281.73 and 11,786.25 is: 16,265.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.89 : 29,281.73 = 11,786.25 : x
  2. Step 2: Convert to fraction form
    21,217.89/29,281.73 = 11,786.25/x
  3. Step 3: Cross multiply
    21,217.89x = 29,281.73 × 11,786.25
  4. Step 4: Simplify right side
    21,217.89x = 345,121,731.28
  5. Step 5: Solve for x
    x = 345,121,731.28/21,217.89
  6. Step 6: Final answer
    x = 16,265.60

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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.