Home / 30,155.43-41,613.50-18,216.68

Finding the Fourth Proportional to 30,155.43, 41,613.50 and 18,216.68

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Solution

The fourth proportional to 30,155.43, 41,613.50 and 18,216.68 is: 25,138.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.43 : 41,613.50 = 18,216.68 : x
  2. Step 2: Convert to fraction form
    30,155.43/41,613.50 = 18,216.68/x
  3. Step 3: Cross multiply
    30,155.43x = 41,613.50 × 18,216.68
  4. Step 4: Simplify right side
    30,155.43x = 758,059,813.18
  5. Step 5: Solve for x
    x = 758,059,813.18/30,155.43
  6. Step 6: Final answer
    x = 25,138.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.