Home / 13,400.99-20,103.03-5,087.21

Finding the Fourth Proportional to 13,400.99, 20,103.03 and 5,087.21

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Solution

The fourth proportional to 13,400.99, 20,103.03 and 5,087.21 is: 7,631.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,400.99 : 20,103.03 = 5,087.21 : x
  2. Step 2: Convert to fraction form
    13,400.99/20,103.03 = 5,087.21/x
  3. Step 3: Cross multiply
    13,400.99x = 20,103.03 × 5,087.21
  4. Step 4: Simplify right side
    13,400.99x = 102,268,385.50
  5. Step 5: Solve for x
    x = 102,268,385.50/13,400.99
  6. Step 6: Final answer
    x = 7,631.41

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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.