Home / 21,383.60-29,509.31-11,693.06

Finding the Fourth Proportional to 21,383.60, 29,509.31 and 11,693.06

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Solution

The fourth proportional to 21,383.60, 29,509.31 and 11,693.06 is: 16,136.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,383.60 : 29,509.31 = 11,693.06 : x
  2. Step 2: Convert to fraction form
    21,383.60/29,509.31 = 11,693.06/x
  3. Step 3: Cross multiply
    21,383.60x = 29,509.31 × 11,693.06
  4. Step 4: Simplify right side
    21,383.60x = 345,054,124.73
  5. Step 5: Solve for x
    x = 345,054,124.73/21,383.60
  6. Step 6: Final answer
    x = 16,136.39

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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.