Home / 20,127.45-30,044.03-18,663.78

Finding the Fourth Proportional to 20,127.45, 30,044.03 and 18,663.78

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Solution

The fourth proportional to 20,127.45, 30,044.03 and 18,663.78 is: 27,859.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.45 : 30,044.03 = 18,663.78 : x
  2. Step 2: Convert to fraction form
    20,127.45/30,044.03 = 18,663.78/x
  3. Step 3: Cross multiply
    20,127.45x = 30,044.03 × 18,663.78
  4. Step 4: Simplify right side
    20,127.45x = 560,735,290.56
  5. Step 5: Solve for x
    x = 560,735,290.56/20,127.45
  6. Step 6: Final answer
    x = 27,859.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.