Home / 18,961.32-28,442.62-5,812.52

Finding the Fourth Proportional to 18,961.32, 28,442.62 and 5,812.52

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Solution

The fourth proportional to 18,961.32, 28,442.62 and 5,812.52 is: 8,718.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,961.32 : 28,442.62 = 5,812.52 : x
  2. Step 2: Convert to fraction form
    18,961.32/28,442.62 = 5,812.52/x
  3. Step 3: Cross multiply
    18,961.32x = 28,442.62 × 5,812.52
  4. Step 4: Simplify right side
    18,961.32x = 165,323,297.60
  5. Step 5: Solve for x
    x = 165,323,297.60/18,961.32
  6. Step 6: Final answer
    x = 8,718.98

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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.