Home / 21,485.25-29,648.89-11,924.90

Finding the Fourth Proportional to 21,485.25, 29,648.89 and 11,924.90

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Solution

The fourth proportional to 21,485.25, 29,648.89 and 11,924.90 is: 16,455.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,485.25 : 29,648.89 = 11,924.90 : x
  2. Step 2: Convert to fraction form
    21,485.25/29,648.89 = 11,924.90/x
  3. Step 3: Cross multiply
    21,485.25x = 29,648.89 × 11,924.90
  4. Step 4: Simplify right side
    21,485.25x = 353,560,063.36
  5. Step 5: Solve for x
    x = 353,560,063.36/21,485.25
  6. Step 6: Final answer
    x = 16,455.94

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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.