Home / 28,388.62-42,582.70-7,326.86

Finding the Fourth Proportional to 28,388.62, 42,582.70 and 7,326.86

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Solution

The fourth proportional to 28,388.62, 42,582.70 and 7,326.86 is: 10,990.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,388.62 : 42,582.70 = 7,326.86 : x
  2. Step 2: Convert to fraction form
    28,388.62/42,582.70 = 7,326.86/x
  3. Step 3: Cross multiply
    28,388.62x = 42,582.70 × 7,326.86
  4. Step 4: Simplify right side
    28,388.62x = 311,997,481.32
  5. Step 5: Solve for x
    x = 311,997,481.32/28,388.62
  6. Step 6: Final answer
    x = 10,990.23

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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.