Home / 12,095.20-18,140.64-3,328.21

Finding the Fourth Proportional to 12,095.20, 18,140.64 and 3,328.21

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Solution

The fourth proportional to 12,095.20, 18,140.64 and 3,328.21 is: 4,991.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,095.20 : 18,140.64 = 3,328.21 : x
  2. Step 2: Convert to fraction form
    12,095.20/18,140.64 = 3,328.21/x
  3. Step 3: Cross multiply
    12,095.20x = 18,140.64 × 3,328.21
  4. Step 4: Simplify right side
    12,095.20x = 60,375,859.45
  5. Step 5: Solve for x
    x = 60,375,859.45/12,095.20
  6. Step 6: Final answer
    x = 4,991.72

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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.