Home / 28,816.80-43,231.20-12,176.88

Finding the Fourth Proportional to 28,816.80, 43,231.20 and 12,176.88

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Solution

The fourth proportional to 28,816.80, 43,231.20 and 12,176.88 is: 18,267.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,816.80 : 43,231.20 = 12,176.88 : x
  2. Step 2: Convert to fraction form
    28,816.80/43,231.20 = 12,176.88/x
  3. Step 3: Cross multiply
    28,816.80x = 43,231.20 × 12,176.88
  4. Step 4: Simplify right side
    28,816.80x = 526,421,134.66
  5. Step 5: Solve for x
    x = 526,421,134.66/28,816.80
  6. Step 6: Final answer
    x = 18,267.86

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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.