Home / 13,414.99-18,511.45-7,963.12

Finding the Fourth Proportional to 13,414.99, 18,511.45 and 7,963.12

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Solution

The fourth proportional to 13,414.99, 18,511.45 and 7,963.12 is: 10,988.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,414.99 : 18,511.45 = 7,963.12 : x
  2. Step 2: Convert to fraction form
    13,414.99/18,511.45 = 7,963.12/x
  3. Step 3: Cross multiply
    13,414.99x = 18,511.45 × 7,963.12
  4. Step 4: Simplify right side
    13,414.99x = 147,408,897.72
  5. Step 5: Solve for x
    x = 147,408,897.72/13,414.99
  6. Step 6: Final answer
    x = 10,988.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.