Home / 18,126.18-27,189.88-12,884.67

Finding the Fourth Proportional to 18,126.18, 27,189.88 and 12,884.67

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Solution

The fourth proportional to 18,126.18, 27,189.88 and 12,884.67 is: 19,327.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,126.18 : 27,189.88 = 12,884.67 : x
  2. Step 2: Convert to fraction form
    18,126.18/27,189.88 = 12,884.67/x
  3. Step 3: Cross multiply
    18,126.18x = 27,189.88 × 12,884.67
  4. Step 4: Simplify right side
    18,126.18x = 350,332,598.93
  5. Step 5: Solve for x
    x = 350,332,598.93/18,126.18
  6. Step 6: Final answer
    x = 19,327.44

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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.