Home / 11,515.80-17,282.46-7,809.24

Finding the Fourth Proportional to 11,515.80, 17,282.46 and 7,809.24

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Solution

The fourth proportional to 11,515.80, 17,282.46 and 7,809.24 is: 11,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,515.80 : 17,282.46 = 7,809.24 : x
  2. Step 2: Convert to fraction form
    11,515.80/17,282.46 = 7,809.24/x
  3. Step 3: Cross multiply
    11,515.80x = 17,282.46 × 7,809.24
  4. Step 4: Simplify right side
    11,515.80x = 134,962,877.93
  5. Step 5: Solve for x
    x = 134,962,877.93/11,515.80
  6. Step 6: Final answer
    x = 11,719.80

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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.