Home / 20,727.92-28,596.42-12,756.31

Finding the Fourth Proportional to 20,727.92, 28,596.42 and 12,756.31

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Solution

The fourth proportional to 20,727.92, 28,596.42 and 12,756.31 is: 17,598.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727.92 : 28,596.42 = 12,756.31 : x
  2. Step 2: Convert to fraction form
    20,727.92/28,596.42 = 12,756.31/x
  3. Step 3: Cross multiply
    20,727.92x = 28,596.42 × 12,756.31
  4. Step 4: Simplify right side
    20,727.92x = 364,784,655.43
  5. Step 5: Solve for x
    x = 364,784,655.43/20,727.92
  6. Step 6: Final answer
    x = 17,598.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.