Home / 28,185.85-42,299.28-22,705.36

Finding the Fourth Proportional to 28,185.85, 42,299.28 and 22,705.36

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Solution

The fourth proportional to 28,185.85, 42,299.28 and 22,705.36 is: 34,074.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,185.85 : 42,299.28 = 22,705.36 : x
  2. Step 2: Convert to fraction form
    28,185.85/42,299.28 = 22,705.36/x
  3. Step 3: Cross multiply
    28,185.85x = 42,299.28 × 22,705.36
  4. Step 4: Simplify right side
    28,185.85x = 960,420,380.14
  5. Step 5: Solve for x
    x = 960,420,380.14/28,185.85
  6. Step 6: Final answer
    x = 34,074.56

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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.