Home / 21,365.20-29,485.36-11,933.80

Finding the Fourth Proportional to 21,365.20, 29,485.36 and 11,933.80

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Solution

The fourth proportional to 21,365.20, 29,485.36 and 11,933.80 is: 16,469.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,365.20 : 29,485.36 = 11,933.80 : x
  2. Step 2: Convert to fraction form
    21,365.20/29,485.36 = 11,933.80/x
  3. Step 3: Cross multiply
    21,365.20x = 29,485.36 × 11,933.80
  4. Step 4: Simplify right side
    21,365.20x = 351,872,389.17
  5. Step 5: Solve for x
    x = 351,872,389.17/21,365.20
  6. Step 6: Final answer
    x = 16,469.42

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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.