Home / 20,724.62-28,599.08-11,772.09

Finding the Fourth Proportional to 20,724.62, 28,599.08 and 11,772.09

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Solution

The fourth proportional to 20,724.62, 28,599.08 and 11,772.09 is: 16,244.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724.62 : 28,599.08 = 11,772.09 : x
  2. Step 2: Convert to fraction form
    20,724.62/28,599.08 = 11,772.09/x
  3. Step 3: Cross multiply
    20,724.62x = 28,599.08 × 11,772.09
  4. Step 4: Simplify right side
    20,724.62x = 336,670,884.82
  5. Step 5: Solve for x
    x = 336,670,884.82/20,724.62
  6. Step 6: Final answer
    x = 16,244.98

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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.