Home / 28,776.20-43,164.30-7,999.70

Finding the Fourth Proportional to 28,776.20, 43,164.30 and 7,999.70

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Solution

The fourth proportional to 28,776.20, 43,164.30 and 7,999.70 is: 11,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,776.20 : 43,164.30 = 7,999.70 : x
  2. Step 2: Convert to fraction form
    28,776.20/43,164.30 = 7,999.70/x
  3. Step 3: Cross multiply
    28,776.20x = 43,164.30 × 7,999.70
  4. Step 4: Simplify right side
    28,776.20x = 345,301,450.71
  5. Step 5: Solve for x
    x = 345,301,450.71/28,776.20
  6. Step 6: Final answer
    x = 11,999.55

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Similar ratio
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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.