Home / 13,458.09-20,190.39-4,224.09

Finding the Fourth Proportional to 13,458.09, 20,190.39 and 4,224.09

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Solution

The fourth proportional to 13,458.09, 20,190.39 and 4,224.09 is: 6,337.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.09 : 20,190.39 = 4,224.09 : x
  2. Step 2: Convert to fraction form
    13,458.09/20,190.39 = 4,224.09/x
  3. Step 3: Cross multiply
    13,458.09x = 20,190.39 × 4,224.09
  4. Step 4: Simplify right side
    13,458.09x = 85,286,024.50
  5. Step 5: Solve for x
    x = 85,286,024.50/13,458.09
  6. Step 6: Final answer
    x = 6,337.16

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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.