Home / 45,513.82-68,242.20-13,913.38

Finding the Fourth Proportional to 45,513.82, 68,242.20 and 13,913.38

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Solution

The fourth proportional to 45,513.82, 68,242.20 and 13,913.38 is: 20,861.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,513.82 : 68,242.20 = 13,913.38 : x
  2. Step 2: Convert to fraction form
    45,513.82/68,242.20 = 13,913.38/x
  3. Step 3: Cross multiply
    45,513.82x = 68,242.20 × 13,913.38
  4. Step 4: Simplify right side
    45,513.82x = 949,479,660.64
  5. Step 5: Solve for x
    x = 949,479,660.64/45,513.82
  6. Step 6: Final answer
    x = 20,861.35

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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.