Home / 11,781.68-17,628.36-7,103.60

Finding the Fourth Proportional to 11,781.68, 17,628.36 and 7,103.60

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Solution

The fourth proportional to 11,781.68, 17,628.36 and 7,103.60 is: 10,628.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,781.68 : 17,628.36 = 7,103.60 : x
  2. Step 2: Convert to fraction form
    11,781.68/17,628.36 = 7,103.60/x
  3. Step 3: Cross multiply
    11,781.68x = 17,628.36 × 7,103.60
  4. Step 4: Simplify right side
    11,781.68x = 125,224,818.10
  5. Step 5: Solve for x
    x = 125,224,818.10/11,781.68
  6. Step 6: Final answer
    x = 10,628.77

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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.