Home / 20,706.10-28,574.31-11,630.20

Finding the Fourth Proportional to 20,706.10, 28,574.31 and 11,630.20

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Solution

The fourth proportional to 20,706.10, 28,574.31 and 11,630.20 is: 16,049.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.10 : 28,574.31 = 11,630.20 : x
  2. Step 2: Convert to fraction form
    20,706.10/28,574.31 = 11,630.20/x
  3. Step 3: Cross multiply
    20,706.10x = 28,574.31 × 11,630.20
  4. Step 4: Simplify right side
    20,706.10x = 332,324,940.16
  5. Step 5: Solve for x
    x = 332,324,940.16/20,706.10
  6. Step 6: Final answer
    x = 16,049.62

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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.