Home / 13,418.78-20,133.45-5,100.99

Finding the Fourth Proportional to 13,418.78, 20,133.45 and 5,100.99

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Solution

The fourth proportional to 13,418.78, 20,133.45 and 5,100.99 is: 7,653.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.78 : 20,133.45 = 5,100.99 : x
  2. Step 2: Convert to fraction form
    13,418.78/20,133.45 = 5,100.99/x
  3. Step 3: Cross multiply
    13,418.78x = 20,133.45 × 5,100.99
  4. Step 4: Simplify right side
    13,418.78x = 102,700,527.12
  5. Step 5: Solve for x
    x = 102,700,527.12/13,418.78
  6. Step 6: Final answer
    x = 7,653.49

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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.