Home / 33,090.68-45,675.78-21,186.08

Finding the Fourth Proportional to 33,090.68, 45,675.78 and 21,186.08

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Solution

The fourth proportional to 33,090.68, 45,675.78 and 21,186.08 is: 29,243.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,090.68 : 45,675.78 = 21,186.08 : x
  2. Step 2: Convert to fraction form
    33,090.68/45,675.78 = 21,186.08/x
  3. Step 3: Cross multiply
    33,090.68x = 45,675.78 × 21,186.08
  4. Step 4: Simplify right side
    33,090.68x = 967,690,729.14
  5. Step 5: Solve for x
    x = 967,690,729.14/33,090.68
  6. Step 6: Final answer
    x = 29,243.60

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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.