Home / 13,403.13-20,105-5,087.06

Finding the Fourth Proportional to 13,403.13, 20,105 and 5,087.06

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Solution

The fourth proportional to 13,403.13, 20,105 and 5,087.06 is: 7,630.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.13 : 20,105 = 5,087.06 : x
  2. Step 2: Convert to fraction form
    13,403.13/20,105 = 5,087.06/x
  3. Step 3: Cross multiply
    13,403.13x = 20,105 × 5,087.06
  4. Step 4: Simplify right side
    13,403.13x = 102,275,341.30
  5. Step 5: Solve for x
    x = 102,275,341.30/13,403.13
  6. Step 6: Final answer
    x = 7,630.71

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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.