Home / 12,579.24-18,868.90-3,814.20

Finding the Fourth Proportional to 12,579.24, 18,868.90 and 3,814.20

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Solution

The fourth proportional to 12,579.24, 18,868.90 and 3,814.20 is: 5,721.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.24 : 18,868.90 = 3,814.20 : x
  2. Step 2: Convert to fraction form
    12,579.24/18,868.90 = 3,814.20/x
  3. Step 3: Cross multiply
    12,579.24x = 18,868.90 × 3,814.20
  4. Step 4: Simplify right side
    12,579.24x = 71,969,758.38
  5. Step 5: Solve for x
    x = 71,969,758.38/12,579.24
  6. Step 6: Final answer
    x = 5,721.31

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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.