Home / 13,391.88-18,460.30-9,401.80

Finding the Fourth Proportional to 13,391.88, 18,460.30 and 9,401.80

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Solution

The fourth proportional to 13,391.88, 18,460.30 and 9,401.80 is: 12,960.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.88 : 18,460.30 = 9,401.80 : x
  2. Step 2: Convert to fraction form
    13,391.88/18,460.30 = 9,401.80/x
  3. Step 3: Cross multiply
    13,391.88x = 18,460.30 × 9,401.80
  4. Step 4: Simplify right side
    13,391.88x = 173,560,048.54
  5. Step 5: Solve for x
    x = 173,560,048.54/13,391.88
  6. Step 6: Final answer
    x = 12,960.10

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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.