Home / 20,202.57-30,293.78-12,801.42

Finding the Fourth Proportional to 20,202.57, 30,293.78 and 12,801.42

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Solution

The fourth proportional to 20,202.57, 30,293.78 and 12,801.42 is: 19,195.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,202.57 : 30,293.78 = 12,801.42 : x
  2. Step 2: Convert to fraction form
    20,202.57/30,293.78 = 12,801.42/x
  3. Step 3: Cross multiply
    20,202.57x = 30,293.78 × 12,801.42
  4. Step 4: Simplify right side
    20,202.57x = 387,803,337.16
  5. Step 5: Solve for x
    x = 387,803,337.16/20,202.57
  6. Step 6: Final answer
    x = 19,195.74

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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.