Home / 20,190.80-30,272.52-10,310.96

Finding the Fourth Proportional to 20,190.80, 30,272.52 and 10,310.96

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Solution

The fourth proportional to 20,190.80, 30,272.52 and 10,310.96 is: 15,459.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.80 : 30,272.52 = 10,310.96 : x
  2. Step 2: Convert to fraction form
    20,190.80/30,272.52 = 10,310.96/x
  3. Step 3: Cross multiply
    20,190.80x = 30,272.52 × 10,310.96
  4. Step 4: Simplify right side
    20,190.80x = 312,138,742.82
  5. Step 5: Solve for x
    x = 312,138,742.82/20,190.80
  6. Step 6: Final answer
    x = 15,459.45

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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.