Home / 20,584.23-28,407.21-12,086.72

Finding the Fourth Proportional to 20,584.23, 28,407.21 and 12,086.72

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Solution

The fourth proportional to 20,584.23, 28,407.21 and 12,086.72 is: 16,680.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,584.23 : 28,407.21 = 12,086.72 : x
  2. Step 2: Convert to fraction form
    20,584.23/28,407.21 = 12,086.72/x
  3. Step 3: Cross multiply
    20,584.23x = 28,407.21 × 12,086.72
  4. Step 4: Simplify right side
    20,584.23x = 343,349,912.42
  5. Step 5: Solve for x
    x = 343,349,912.42/20,584.23
  6. Step 6: Final answer
    x = 16,680.24

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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.