Home / 13,137.36-19,578.61-12,717.07

Finding the Fourth Proportional to 13,137.36, 19,578.61 and 12,717.07

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Solution

The fourth proportional to 13,137.36, 19,578.61 and 12,717.07 is: 18,952.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.36 : 19,578.61 = 12,717.07 : x
  2. Step 2: Convert to fraction form
    13,137.36/19,578.61 = 12,717.07/x
  3. Step 3: Cross multiply
    13,137.36x = 19,578.61 × 12,717.07
  4. Step 4: Simplify right side
    13,137.36x = 248,982,553.87
  5. Step 5: Solve for x
    x = 248,982,553.87/13,137.36
  6. Step 6: Final answer
    x = 18,952.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.