Home / 13,599.11-20,401.91-5,279.33

Finding the Fourth Proportional to 13,599.11, 20,401.91 and 5,279.33

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Solution

The fourth proportional to 13,599.11, 20,401.91 and 5,279.33 is: 7,920.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,599.11 : 20,401.91 = 5,279.33 : x
  2. Step 2: Convert to fraction form
    13,599.11/20,401.91 = 5,279.33/x
  3. Step 3: Cross multiply
    13,599.11x = 20,401.91 × 5,279.33
  4. Step 4: Simplify right side
    13,599.11x = 107,708,415.52
  5. Step 5: Solve for x
    x = 107,708,415.52/13,599.11
  6. Step 6: Final answer
    x = 7,920.25

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1.5x scale

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.