Home / 11,749.29-17,628.55-5,170.86

Finding the Fourth Proportional to 11,749.29, 17,628.55 and 5,170.86

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Solution

The fourth proportional to 11,749.29, 17,628.55 and 5,170.86 is: 7,758.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,749.29 : 17,628.55 = 5,170.86 : x
  2. Step 2: Convert to fraction form
    11,749.29/17,628.55 = 5,170.86/x
  3. Step 3: Cross multiply
    11,749.29x = 17,628.55 × 5,170.86
  4. Step 4: Simplify right side
    11,749.29x = 91,154,751.13
  5. Step 5: Solve for x
    x = 91,154,751.13/11,749.29
  6. Step 6: Final answer
    x = 7,758.32

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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.