Home / 20,681.46-28,537.92-11,728.53

Finding the Fourth Proportional to 20,681.46, 28,537.92 and 11,728.53

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Solution

The fourth proportional to 20,681.46, 28,537.92 and 11,728.53 is: 16,183.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.46 : 28,537.92 = 11,728.53 : x
  2. Step 2: Convert to fraction form
    20,681.46/28,537.92 = 11,728.53/x
  3. Step 3: Cross multiply
    20,681.46x = 28,537.92 × 11,728.53
  4. Step 4: Simplify right side
    20,681.46x = 334,707,850.86
  5. Step 5: Solve for x
    x = 334,707,850.86/20,681.46
  6. Step 6: Final answer
    x = 16,183.96

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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.