Home / 13,945.16-20,911.74-5,173.64

Finding the Fourth Proportional to 13,945.16, 20,911.74 and 5,173.64

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Solution

The fourth proportional to 13,945.16, 20,911.74 and 5,173.64 is: 7,758.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.16 : 20,911.74 = 5,173.64 : x
  2. Step 2: Convert to fraction form
    13,945.16/20,911.74 = 5,173.64/x
  3. Step 3: Cross multiply
    13,945.16x = 20,911.74 × 5,173.64
  4. Step 4: Simplify right side
    13,945.16x = 108,189,814.53
  5. Step 5: Solve for x
    x = 108,189,814.53/13,945.16
  6. Step 6: Final answer
    x = 7,758.23

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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.