Home / 20,234.80-30,344.10-7,080.40

Finding the Fourth Proportional to 20,234.80, 30,344.10 and 7,080.40

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Solution

The fourth proportional to 20,234.80, 30,344.10 and 7,080.40 is: 10,617.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.80 : 30,344.10 = 7,080.40 : x
  2. Step 2: Convert to fraction form
    20,234.80/30,344.10 = 7,080.40/x
  3. Step 3: Cross multiply
    20,234.80x = 30,344.10 × 7,080.40
  4. Step 4: Simplify right side
    20,234.80x = 214,848,365.64
  5. Step 5: Solve for x
    x = 214,848,365.64/20,234.80
  6. Step 6: Final answer
    x = 10,617.77

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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.