Home / 27,129.63-40,688.97-18,884.64

Finding the Fourth Proportional to 27,129.63, 40,688.97 and 18,884.64

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Solution

The fourth proportional to 27,129.63, 40,688.97 and 18,884.64 is: 28,323.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,129.63 : 40,688.97 = 18,884.64 : x
  2. Step 2: Convert to fraction form
    27,129.63/40,688.97 = 18,884.64/x
  3. Step 3: Cross multiply
    27,129.63x = 40,688.97 × 18,884.64
  4. Step 4: Simplify right side
    27,129.63x = 768,396,550.42
  5. Step 5: Solve for x
    x = 768,396,550.42/27,129.63
  6. Step 6: Final answer
    x = 28,323.15

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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.