Home / 21,493.80-29,662.74-13,110.36

Finding the Fourth Proportional to 21,493.80, 29,662.74 and 13,110.36

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Solution

The fourth proportional to 21,493.80, 29,662.74 and 13,110.36 is: 18,093.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,493.80 : 29,662.74 = 13,110.36 : x
  2. Step 2: Convert to fraction form
    21,493.80/29,662.74 = 13,110.36/x
  3. Step 3: Cross multiply
    21,493.80x = 29,662.74 × 13,110.36
  4. Step 4: Simplify right side
    21,493.80x = 388,889,199.99
  5. Step 5: Solve for x
    x = 388,889,199.99/21,493.80
  6. Step 6: Final answer
    x = 18,093.09

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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.