Home / 14,147.24-21,217.39-5,139.88

Finding the Fourth Proportional to 14,147.24, 21,217.39 and 5,139.88

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Solution

The fourth proportional to 14,147.24, 21,217.39 and 5,139.88 is: 7,708.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,147.24 : 21,217.39 = 5,139.88 : x
  2. Step 2: Convert to fraction form
    14,147.24/21,217.39 = 5,139.88/x
  3. Step 3: Cross multiply
    14,147.24x = 21,217.39 × 5,139.88
  4. Step 4: Simplify right side
    14,147.24x = 109,054,772.62
  5. Step 5: Solve for x
    x = 109,054,772.62/14,147.24
  6. Step 6: Final answer
    x = 7,708.56

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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.