Home / 28,861.68-43,300.20-9,140.64

Finding the Fourth Proportional to 28,861.68, 43,300.20 and 9,140.64

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Solution

The fourth proportional to 28,861.68, 43,300.20 and 9,140.64 is: 13,713.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.68 : 43,300.20 = 9,140.64 : x
  2. Step 2: Convert to fraction form
    28,861.68/43,300.20 = 9,140.64/x
  3. Step 3: Cross multiply
    28,861.68x = 43,300.20 × 9,140.64
  4. Step 4: Simplify right side
    28,861.68x = 395,791,540.13
  5. Step 5: Solve for x
    x = 395,791,540.13/28,861.68
  6. Step 6: Final answer
    x = 13,713.39

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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.