Home / 30,949.14-42,709.99-18,202.86

Finding the Fourth Proportional to 30,949.14, 42,709.99 and 18,202.86

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Solution

The fourth proportional to 30,949.14, 42,709.99 and 18,202.86 is: 25,120.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,949.14 : 42,709.99 = 18,202.86 : x
  2. Step 2: Convert to fraction form
    30,949.14/42,709.99 = 18,202.86/x
  3. Step 3: Cross multiply
    30,949.14x = 42,709.99 × 18,202.86
  4. Step 4: Simplify right side
    30,949.14x = 777,443,770.78
  5. Step 5: Solve for x
    x = 777,443,770.78/30,949.14
  6. Step 6: Final answer
    x = 25,120.05

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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.