Home / 28,300.86-42,469.11-15,829.05

Finding the Fourth Proportional to 28,300.86, 42,469.11 and 15,829.05

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Solution

The fourth proportional to 28,300.86, 42,469.11 and 15,829.05 is: 23,753.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,300.86 : 42,469.11 = 15,829.05 : x
  2. Step 2: Convert to fraction form
    28,300.86/42,469.11 = 15,829.05/x
  3. Step 3: Cross multiply
    28,300.86x = 42,469.11 × 15,829.05
  4. Step 4: Simplify right side
    28,300.86x = 672,245,665.65
  5. Step 5: Solve for x
    x = 672,245,665.65/28,300.86
  6. Step 6: Final answer
    x = 23,753.54

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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.