Home / 28,905.12-43,355.52-8,125.92

Finding the Fourth Proportional to 28,905.12, 43,355.52 and 8,125.92

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Solution

The fourth proportional to 28,905.12, 43,355.52 and 8,125.92 is: 12,188.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,905.12 : 43,355.52 = 8,125.92 : x
  2. Step 2: Convert to fraction form
    28,905.12/43,355.52 = 8,125.92/x
  3. Step 3: Cross multiply
    28,905.12x = 43,355.52 × 8,125.92
  4. Step 4: Simplify right side
    28,905.12x = 352,303,487.08
  5. Step 5: Solve for x
    x = 352,303,487.08/28,905.12
  6. Step 6: Final answer
    x = 12,188.27

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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.