Home / 51,279.21-76,919.42-18,000.23

Finding the Fourth Proportional to 51,279.21, 76,919.42 and 18,000.23

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Solution

The fourth proportional to 51,279.21, 76,919.42 and 18,000.23 is: 27,000.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,279.21 : 76,919.42 = 18,000.23 : x
  2. Step 2: Convert to fraction form
    51,279.21/76,919.42 = 18,000.23/x
  3. Step 3: Cross multiply
    51,279.21x = 76,919.42 × 18,000.23
  4. Step 4: Simplify right side
    51,279.21x = 1,384,566,911.87
  5. Step 5: Solve for x
    x = 1,384,566,911.87/51,279.21
  6. Step 6: Final answer
    x = 27,000.55

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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.