Home / 28,728.96-43,091.76-12,080.28

Finding the Fourth Proportional to 28,728.96, 43,091.76 and 12,080.28

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Solution

The fourth proportional to 28,728.96, 43,091.76 and 12,080.28 is: 18,119.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,728.96 : 43,091.76 = 12,080.28 : x
  2. Step 2: Convert to fraction form
    28,728.96/43,091.76 = 12,080.28/x
  3. Step 3: Cross multiply
    28,728.96x = 43,091.76 × 12,080.28
  4. Step 4: Simplify right side
    28,728.96x = 520,560,526.49
  5. Step 5: Solve for x
    x = 520,560,526.49/28,728.96
  6. Step 6: Final answer
    x = 18,119.71

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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.