Home / 21,220.00-29,285.82-11,788.56

Finding the Fourth Proportional to 21,220.00, 29,285.82 and 11,788.56

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Solution

The fourth proportional to 21,220.00, 29,285.82 and 11,788.56 is: 16,269.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.00 : 29,285.82 = 11,788.56 : x
  2. Step 2: Convert to fraction form
    21,220.00/29,285.82 = 11,788.56/x
  3. Step 3: Cross multiply
    21,220.00x = 29,285.82 × 11,788.56
  4. Step 4: Simplify right side
    21,220.00x = 345,237,646.22
  5. Step 5: Solve for x
    x = 345,237,646.22/21,220.00
  6. Step 6: Final answer
    x = 16,269.45

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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.