Home / 28,631.39-42,963.83-11,990.02

Finding the Fourth Proportional to 28,631.39, 42,963.83 and 11,990.02

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Solution

The fourth proportional to 28,631.39, 42,963.83 and 11,990.02 is: 17,992.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,631.39 : 42,963.83 = 11,990.02 : x
  2. Step 2: Convert to fraction form
    28,631.39/42,963.83 = 11,990.02/x
  3. Step 3: Cross multiply
    28,631.39x = 42,963.83 × 11,990.02
  4. Step 4: Simplify right side
    28,631.39x = 515,137,121.03
  5. Step 5: Solve for x
    x = 515,137,121.03/28,631.39
  6. Step 6: Final answer
    x = 17,992.04

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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.