Home / 13,608.57-20,419.13-6,215.29

Finding the Fourth Proportional to 13,608.57, 20,419.13 and 6,215.29

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Solution

The fourth proportional to 13,608.57, 20,419.13 and 6,215.29 is: 9,325.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608.57 : 20,419.13 = 6,215.29 : x
  2. Step 2: Convert to fraction form
    13,608.57/20,419.13 = 6,215.29/x
  3. Step 3: Cross multiply
    13,608.57x = 20,419.13 × 6,215.29
  4. Step 4: Simplify right side
    13,608.57x = 126,910,814.50
  5. Step 5: Solve for x
    x = 126,910,814.50/13,608.57
  6. Step 6: Final answer
    x = 9,325.80

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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.