Home / 33,000.78-45,540.79-18,663.42

Finding the Fourth Proportional to 33,000.78, 45,540.79 and 18,663.42

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Solution

The fourth proportional to 33,000.78, 45,540.79 and 18,663.42 is: 25,755.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,000.78 : 45,540.79 = 18,663.42 : x
  2. Step 2: Convert to fraction form
    33,000.78/45,540.79 = 18,663.42/x
  3. Step 3: Cross multiply
    33,000.78x = 45,540.79 × 18,663.42
  4. Step 4: Simplify right side
    33,000.78x = 849,946,844.24
  5. Step 5: Solve for x
    x = 849,946,844.24/33,000.78
  6. Step 6: Final answer
    x = 25,755.36

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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.