Home / 20,683.42-28,542.96-11,251.98

Finding the Fourth Proportional to 20,683.42, 28,542.96 and 11,251.98

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Solution

The fourth proportional to 20,683.42, 28,542.96 and 11,251.98 is: 15,527.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.42 : 28,542.96 = 11,251.98 : x
  2. Step 2: Convert to fraction form
    20,683.42/28,542.96 = 11,251.98/x
  3. Step 3: Cross multiply
    20,683.42x = 28,542.96 × 11,251.98
  4. Step 4: Simplify right side
    20,683.42x = 321,164,815.06
  5. Step 5: Solve for x
    x = 321,164,815.06/20,683.42
  6. Step 6: Final answer
    x = 15,527.65

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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.