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Finding the Fourth Proportional to 13,873.92, 20,812.92 and 4,011.92

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Solution

The fourth proportional to 13,873.92, 20,812.92 and 4,011.92 is: 6,018.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,873.92 : 20,812.92 = 4,011.92 : x
  2. Step 2: Convert to fraction form
    13,873.92/20,812.92 = 4,011.92/x
  3. Step 3: Cross multiply
    13,873.92x = 20,812.92 × 4,011.92
  4. Step 4: Simplify right side
    13,873.92x = 83,499,665.94
  5. Step 5: Solve for x
    x = 83,499,665.94/13,873.92
  6. Step 6: Final answer
    x = 6,018.46

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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.