Home / 20,349.54-30,469.62-12,913.74

Finding the Fourth Proportional to 20,349.54, 30,469.62 and 12,913.74

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Solution

The fourth proportional to 20,349.54, 30,469.62 and 12,913.74 is: 19,335.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.54 : 30,469.62 = 12,913.74 : x
  2. Step 2: Convert to fraction form
    20,349.54/30,469.62 = 12,913.74/x
  3. Step 3: Cross multiply
    20,349.54x = 30,469.62 × 12,913.74
  4. Step 4: Simplify right side
    20,349.54x = 393,476,750.58
  5. Step 5: Solve for x
    x = 393,476,750.58/20,349.54
  6. Step 6: Final answer
    x = 19,335.90

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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.