Home / 20,550.56-28,357.68-15,175.84

Finding the Fourth Proportional to 20,550.56, 28,357.68 and 15,175.84

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Solution

The fourth proportional to 20,550.56, 28,357.68 and 15,175.84 is: 20,941.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.56 : 28,357.68 = 15,175.84 : x
  2. Step 2: Convert to fraction form
    20,550.56/28,357.68 = 15,175.84/x
  3. Step 3: Cross multiply
    20,550.56x = 28,357.68 × 15,175.84
  4. Step 4: Simplify right side
    20,550.56x = 430,351,614.45
  5. Step 5: Solve for x
    x = 430,351,614.45/20,550.56
  6. Step 6: Final answer
    x = 20,941.11

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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.