Home / 28,778.92-43,150.38-12,130.36

Finding the Fourth Proportional to 28,778.92, 43,150.38 and 12,130.36

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Solution

The fourth proportional to 28,778.92, 43,150.38 and 12,130.36 is: 18,187.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778.92 : 43,150.38 = 12,130.36 : x
  2. Step 2: Convert to fraction form
    28,778.92/43,150.38 = 12,130.36/x
  3. Step 3: Cross multiply
    28,778.92x = 43,150.38 × 12,130.36
  4. Step 4: Simplify right side
    28,778.92x = 523,429,643.54
  5. Step 5: Solve for x
    x = 523,429,643.54/28,778.92
  6. Step 6: Final answer
    x = 18,187.95

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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.