Home / 28,076.72-42,129.84-11,449.04

Finding the Fourth Proportional to 28,076.72, 42,129.84 and 11,449.04

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Solution

The fourth proportional to 28,076.72, 42,129.84 and 11,449.04 is: 17,179.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,076.72 : 42,129.84 = 11,449.04 : x
  2. Step 2: Convert to fraction form
    28,076.72/42,129.84 = 11,449.04/x
  3. Step 3: Cross multiply
    28,076.72x = 42,129.84 × 11,449.04
  4. Step 4: Simplify right side
    28,076.72x = 482,346,223.35
  5. Step 5: Solve for x
    x = 482,346,223.35/28,076.72
  6. Step 6: Final answer
    x = 17,179.58

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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.