Home / 13,628.43-20,401.91-8,346.81

Finding the Fourth Proportional to 13,628.43, 20,401.91 and 8,346.81

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Solution

The fourth proportional to 13,628.43, 20,401.91 and 8,346.81 is: 12,495.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.43 : 20,401.91 = 8,346.81 : x
  2. Step 2: Convert to fraction form
    13,628.43/20,401.91 = 8,346.81/x
  3. Step 3: Cross multiply
    13,628.43x = 20,401.91 × 8,346.81
  4. Step 4: Simplify right side
    13,628.43x = 170,290,824.67
  5. Step 5: Solve for x
    x = 170,290,824.67/13,628.43
  6. Step 6: Final answer
    x = 12,495.26

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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.