Home / 20,309.45-30,465.99-5,518.44

Finding the Fourth Proportional to 20,309.45, 30,465.99 and 5,518.44

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Solution

The fourth proportional to 20,309.45, 30,465.99 and 5,518.44 is: 8,278.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.45 : 30,465.99 = 5,518.44 : x
  2. Step 2: Convert to fraction form
    20,309.45/30,465.99 = 5,518.44/x
  3. Step 3: Cross multiply
    20,309.45x = 30,465.99 × 5,518.44
  4. Step 4: Simplify right side
    20,309.45x = 168,124,737.86
  5. Step 5: Solve for x
    x = 168,124,737.86/20,309.45
  6. Step 6: Final answer
    x = 8,278.16

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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.