Home / 28,788.30-43,187.07-12,150.80

Finding the Fourth Proportional to 28,788.30, 43,187.07 and 12,150.80

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Solution

The fourth proportional to 28,788.30, 43,187.07 and 12,150.80 is: 18,228.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,788.30 : 43,187.07 = 12,150.80 : x
  2. Step 2: Convert to fraction form
    28,788.30/43,187.07 = 12,150.80/x
  3. Step 3: Cross multiply
    28,788.30x = 43,187.07 × 12,150.80
  4. Step 4: Simplify right side
    28,788.30x = 524,757,234.22
  5. Step 5: Solve for x
    x = 524,757,234.22/28,788.30
  6. Step 6: Final answer
    x = 18,228.14

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1.5x scale

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.