Home / 21,221.04-29,284.96-11,790.48

Finding the Fourth Proportional to 21,221.04, 29,284.96 and 11,790.48

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Solution

The fourth proportional to 21,221.04, 29,284.96 and 11,790.48 is: 16,270.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,221.04 : 29,284.96 = 11,790.48 : x
  2. Step 2: Convert to fraction form
    21,221.04/29,284.96 = 11,790.48/x
  3. Step 3: Cross multiply
    21,221.04x = 29,284.96 × 11,790.48
  4. Step 4: Simplify right side
    21,221.04x = 345,283,735.18
  5. Step 5: Solve for x
    x = 345,283,735.18/21,221.04
  6. Step 6: Final answer
    x = 16,270.82

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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.