Home / 21,375.75-29,498.54-11,945.19

Finding the Fourth Proportional to 21,375.75, 29,498.54 and 11,945.19

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Solution

The fourth proportional to 21,375.75, 29,498.54 and 11,945.19 is: 16,484.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375.75 : 29,498.54 = 11,945.19 : x
  2. Step 2: Convert to fraction form
    21,375.75/29,498.54 = 11,945.19/x
  3. Step 3: Cross multiply
    21,375.75x = 29,498.54 × 11,945.19
  4. Step 4: Simplify right side
    21,375.75x = 352,365,605.30
  5. Step 5: Solve for x
    x = 352,365,605.30/21,375.75
  6. Step 6: Final answer
    x = 16,484.36

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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.