Home / 11,519.50-17,279.27-7,812.54

Finding the Fourth Proportional to 11,519.50, 17,279.27 and 7,812.54

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Solution

The fourth proportional to 11,519.50, 17,279.27 and 7,812.54 is: 11,718.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,519.50 : 17,279.27 = 7,812.54 : x
  2. Step 2: Convert to fraction form
    11,519.50/17,279.27 = 7,812.54/x
  3. Step 3: Cross multiply
    11,519.50x = 17,279.27 × 7,812.54
  4. Step 4: Simplify right side
    11,519.50x = 134,994,988.05
  5. Step 5: Solve for x
    x = 134,994,988.05/11,519.50
  6. Step 6: Final answer
    x = 11,718.82

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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.