Home / 20,532.12-28,333.62-11,579.88

Finding the Fourth Proportional to 20,532.12, 28,333.62 and 11,579.88

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Solution

The fourth proportional to 20,532.12, 28,333.62 and 11,579.88 is: 15,979.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,532.12 : 28,333.62 = 11,579.88 : x
  2. Step 2: Convert to fraction form
    20,532.12/28,333.62 = 11,579.88/x
  3. Step 3: Cross multiply
    20,532.12x = 28,333.62 × 11,579.88
  4. Step 4: Simplify right side
    20,532.12x = 328,099,919.57
  5. Step 5: Solve for x
    x = 328,099,919.57/20,532.12
  6. Step 6: Final answer
    x = 15,979.84

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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.