Home / 11,388.30-17,091.09-7,681.74

Finding the Fourth Proportional to 11,388.30, 17,091.09 and 7,681.74

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Solution

The fourth proportional to 11,388.30, 17,091.09 and 7,681.74 is: 11,528.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,388.30 : 17,091.09 = 7,681.74 : x
  2. Step 2: Convert to fraction form
    11,388.30/17,091.09 = 7,681.74/x
  3. Step 3: Cross multiply
    11,388.30x = 17,091.09 × 7,681.74
  4. Step 4: Simplify right side
    11,388.30x = 131,289,309.70
  5. Step 5: Solve for x
    x = 131,289,309.70/11,388.30
  6. Step 6: Final answer
    x = 11,528.44

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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.