Home / 20,724.09-28,599.39-11,292.72

Finding the Fourth Proportional to 20,724.09, 28,599.39 and 11,292.72

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Solution

The fourth proportional to 20,724.09, 28,599.39 and 11,292.72 is: 15,584.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724.09 : 28,599.39 = 11,292.72 : x
  2. Step 2: Convert to fraction form
    20,724.09/28,599.39 = 11,292.72/x
  3. Step 3: Cross multiply
    20,724.09x = 28,599.39 × 11,292.72
  4. Step 4: Simplify right side
    20,724.09x = 322,964,903.44
  5. Step 5: Solve for x
    x = 322,964,903.44/20,724.09
  6. Step 6: Final answer
    x = 15,584.03

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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.