Home / 28,120.86-42,180.24-7,061.04

Finding the Fourth Proportional to 28,120.86, 42,180.24 and 7,061.04

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Solution

The fourth proportional to 28,120.86, 42,180.24 and 7,061.04 is: 10,591.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.86 : 42,180.24 = 7,061.04 : x
  2. Step 2: Convert to fraction form
    28,120.86/42,180.24 = 7,061.04/x
  3. Step 3: Cross multiply
    28,120.86x = 42,180.24 × 7,061.04
  4. Step 4: Simplify right side
    28,120.86x = 297,836,361.85
  5. Step 5: Solve for x
    x = 297,836,361.85/28,120.86
  6. Step 6: Final answer
    x = 10,591.30

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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.