Home / 21,469.88-29,628.99-11,909.93

Finding the Fourth Proportional to 21,469.88, 29,628.99 and 11,909.93

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Solution

The fourth proportional to 21,469.88, 29,628.99 and 11,909.93 is: 16,436.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,469.88 : 29,628.99 = 11,909.93 : x
  2. Step 2: Convert to fraction form
    21,469.88/29,628.99 = 11,909.93/x
  3. Step 3: Cross multiply
    21,469.88x = 29,628.99 × 11,909.93
  4. Step 4: Simplify right side
    21,469.88x = 352,879,048.73
  5. Step 5: Solve for x
    x = 352,879,048.73/21,469.88
  6. Step 6: Final answer
    x = 16,436.00

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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.