Home / 20,186.22-30,279.23-8,499.45

Finding the Fourth Proportional to 20,186.22, 30,279.23 and 8,499.45

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Solution

The fourth proportional to 20,186.22, 30,279.23 and 8,499.45 is: 12,749.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186.22 : 30,279.23 = 8,499.45 : x
  2. Step 2: Convert to fraction form
    20,186.22/30,279.23 = 8,499.45/x
  3. Step 3: Cross multiply
    20,186.22x = 30,279.23 × 8,499.45
  4. Step 4: Simplify right side
    20,186.22x = 257,356,801.42
  5. Step 5: Solve for x
    x = 257,356,801.42/20,186.22
  6. Step 6: Final answer
    x = 12,749.13

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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.