Home / 43,470.20-65,186.10-20,103.80

Finding the Fourth Proportional to 43,470.20, 65,186.10 and 20,103.80

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Solution

The fourth proportional to 43,470.20, 65,186.10 and 20,103.80 is: 30,146.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,470.20 : 65,186.10 = 20,103.80 : x
  2. Step 2: Convert to fraction form
    43,470.20/65,186.10 = 20,103.80/x
  3. Step 3: Cross multiply
    43,470.20x = 65,186.10 × 20,103.80
  4. Step 4: Simplify right side
    43,470.20x = 1,310,488,317.18
  5. Step 5: Solve for x
    x = 1,310,488,317.18/43,470.20
  6. Step 6: Final answer
    x = 30,146.82

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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.