Home / 28,367.12-42,487.32-20,558

Finding the Fourth Proportional to 28,367.12, 42,487.32 and 20,558

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Solution

The fourth proportional to 28,367.12, 42,487.32 and 20,558 is: 30,791.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,367.12 : 42,487.32 = 20,558 : x
  2. Step 2: Convert to fraction form
    28,367.12/42,487.32 = 20,558/x
  3. Step 3: Cross multiply
    28,367.12x = 42,487.32 × 20,558
  4. Step 4: Simplify right side
    28,367.12x = 873,454,324.56
  5. Step 5: Solve for x
    x = 873,454,324.56/28,367.12
  6. Step 6: Final answer
    x = 30,791.08

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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.