Home / 28,107.28-42,147.04-9,380.88

Finding the Fourth Proportional to 28,107.28, 42,147.04 and 9,380.88

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Solution

The fourth proportional to 28,107.28, 42,147.04 and 9,380.88 is: 14,066.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107.28 : 42,147.04 = 9,380.88 : x
  2. Step 2: Convert to fraction form
    28,107.28/42,147.04 = 9,380.88/x
  3. Step 3: Cross multiply
    28,107.28x = 42,147.04 × 9,380.88
  4. Step 4: Simplify right side
    28,107.28x = 395,376,324.60
  5. Step 5: Solve for x
    x = 395,376,324.60/28,107.28
  6. Step 6: Final answer
    x = 14,066.69

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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.