Home / 13,137.49-19,707.45-5,238.10

Finding the Fourth Proportional to 13,137.49, 19,707.45 and 5,238.10

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Solution

The fourth proportional to 13,137.49, 19,707.45 and 5,238.10 is: 7,857.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.49 : 19,707.45 = 5,238.10 : x
  2. Step 2: Convert to fraction form
    13,137.49/19,707.45 = 5,238.10/x
  3. Step 3: Cross multiply
    13,137.49x = 19,707.45 × 5,238.10
  4. Step 4: Simplify right side
    13,137.49x = 103,229,593.85
  5. Step 5: Solve for x
    x = 103,229,593.85/13,137.49
  6. Step 6: Final answer
    x = 7,857.63

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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.