Home / 20,137.33-30,222.20-10,279.23

Finding the Fourth Proportional to 20,137.33, 30,222.20 and 10,279.23

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Solution

The fourth proportional to 20,137.33, 30,222.20 and 10,279.23 is: 15,427.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.33 : 30,222.20 = 10,279.23 : x
  2. Step 2: Convert to fraction form
    20,137.33/30,222.20 = 10,279.23/x
  3. Step 3: Cross multiply
    20,137.33x = 30,222.20 × 10,279.23
  4. Step 4: Simplify right side
    20,137.33x = 310,660,944.91
  5. Step 5: Solve for x
    x = 310,660,944.91/20,137.33
  6. Step 6: Final answer
    x = 15,427.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.