Home / 11,715.03-16,132.77-8,172.09

Finding the Fourth Proportional to 11,715.03, 16,132.77 and 8,172.09

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Solution

The fourth proportional to 11,715.03, 16,132.77 and 8,172.09 is: 11,253.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,715.03 : 16,132.77 = 8,172.09 : x
  2. Step 2: Convert to fraction form
    11,715.03/16,132.77 = 8,172.09/x
  3. Step 3: Cross multiply
    11,715.03x = 16,132.77 × 8,172.09
  4. Step 4: Simplify right side
    11,715.03x = 131,838,448.39
  5. Step 5: Solve for x
    x = 131,838,448.39/11,715.03
  6. Step 6: Final answer
    x = 11,253.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.