Home / 11,387.53-17,072.79-7,679.35

Finding the Fourth Proportional to 11,387.53, 17,072.79 and 7,679.35

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Solution

The fourth proportional to 11,387.53, 17,072.79 and 7,679.35 is: 11,513.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,387.53 : 17,072.79 = 7,679.35 : x
  2. Step 2: Convert to fraction form
    11,387.53/17,072.79 = 7,679.35/x
  3. Step 3: Cross multiply
    11,387.53x = 17,072.79 × 7,679.35
  4. Step 4: Simplify right side
    11,387.53x = 131,107,929.89
  5. Step 5: Solve for x
    x = 131,107,929.89/11,387.53
  6. Step 6: Final answer
    x = 11,513.29

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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.