Home / 13,720.84-20,583.77-5,400.67

Finding the Fourth Proportional to 13,720.84, 20,583.77 and 5,400.67

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Solution

The fourth proportional to 13,720.84, 20,583.77 and 5,400.67 is: 8,101.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.84 : 20,583.77 = 5,400.67 : x
  2. Step 2: Convert to fraction form
    13,720.84/20,583.77 = 5,400.67/x
  3. Step 3: Cross multiply
    13,720.84x = 20,583.77 × 5,400.67
  4. Step 4: Simplify right side
    13,720.84x = 111,166,149.13
  5. Step 5: Solve for x
    x = 111,166,149.13/13,720.84
  6. Step 6: Final answer
    x = 8,101.99

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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.