Home / 12,019.92-18,028.68-4,229.34

Finding the Fourth Proportional to 12,019.92, 18,028.68 and 4,229.34

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Solution

The fourth proportional to 12,019.92, 18,028.68 and 4,229.34 is: 6,343.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,019.92 : 18,028.68 = 4,229.34 : x
  2. Step 2: Convert to fraction form
    12,019.92/18,028.68 = 4,229.34/x
  3. Step 3: Cross multiply
    12,019.92x = 18,028.68 × 4,229.34
  4. Step 4: Simplify right side
    12,019.92x = 76,249,417.47
  5. Step 5: Solve for x
    x = 76,249,417.47/12,019.92
  6. Step 6: Final answer
    x = 6,343.59

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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.