Home / 12,517.79-18,760.48-5,113.76

Finding the Fourth Proportional to 12,517.79, 18,760.48 and 5,113.76

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Solution

The fourth proportional to 12,517.79, 18,760.48 and 5,113.76 is: 7,664.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,517.79 : 18,760.48 = 5,113.76 : x
  2. Step 2: Convert to fraction form
    12,517.79/18,760.48 = 5,113.76/x
  3. Step 3: Cross multiply
    12,517.79x = 18,760.48 × 5,113.76
  4. Step 4: Simplify right side
    12,517.79x = 95,936,485.62
  5. Step 5: Solve for x
    x = 95,936,485.62/12,517.79
  6. Step 6: Final answer
    x = 7,664.01

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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.