Home / 30,155.67-41,613.84-18,216.93

Finding the Fourth Proportional to 30,155.67, 41,613.84 and 18,216.93

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Solution

The fourth proportional to 30,155.67, 41,613.84 and 18,216.93 is: 25,138.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.67 : 41,613.84 = 18,216.93 : x
  2. Step 2: Convert to fraction form
    30,155.67/41,613.84 = 18,216.93/x
  3. Step 3: Cross multiply
    30,155.67x = 41,613.84 × 18,216.93
  4. Step 4: Simplify right side
    30,155.67x = 758,076,410.31
  5. Step 5: Solve for x
    x = 758,076,410.31/30,155.67
  6. Step 6: Final answer
    x = 25,138.77

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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.