Home / 20,631.43-30,957.37-8,160.40

Finding the Fourth Proportional to 20,631.43, 30,957.37 and 8,160.40

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Solution

The fourth proportional to 20,631.43, 30,957.37 and 8,160.40 is: 12,244.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,631.43 : 30,957.37 = 8,160.40 : x
  2. Step 2: Convert to fraction form
    20,631.43/30,957.37 = 8,160.40/x
  3. Step 3: Cross multiply
    20,631.43x = 30,957.37 × 8,160.40
  4. Step 4: Simplify right side
    20,631.43x = 252,624,522.15
  5. Step 5: Solve for x
    x = 252,624,522.15/20,631.43
  6. Step 6: Final answer
    x = 12,244.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.