Home / 13,503.21-20,255.37-4,143.29

Finding the Fourth Proportional to 13,503.21, 20,255.37 and 4,143.29

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Solution

The fourth proportional to 13,503.21, 20,255.37 and 4,143.29 is: 6,215.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,503.21 : 20,255.37 = 4,143.29 : x
  2. Step 2: Convert to fraction form
    13,503.21/20,255.37 = 4,143.29/x
  3. Step 3: Cross multiply
    13,503.21x = 20,255.37 × 4,143.29
  4. Step 4: Simplify right side
    13,503.21x = 83,923,755.15
  5. Step 5: Solve for x
    x = 83,923,755.15/13,503.21
  6. Step 6: Final answer
    x = 6,215.10

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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.