Home / 28,947.86-43,421.78-8,171.36

Finding the Fourth Proportional to 28,947.86, 43,421.78 and 8,171.36

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Solution

The fourth proportional to 28,947.86, 43,421.78 and 8,171.36 is: 12,257.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,947.86 : 43,421.78 = 8,171.36 : x
  2. Step 2: Convert to fraction form
    28,947.86/43,421.78 = 8,171.36/x
  3. Step 3: Cross multiply
    28,947.86x = 43,421.78 × 8,171.36
  4. Step 4: Simplify right side
    28,947.86x = 354,814,996.22
  5. Step 5: Solve for x
    x = 354,814,996.22/28,947.86
  6. Step 6: Final answer
    x = 12,257.04

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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.