Home / 11,720.09-17,581.50-4,702.55

Finding the Fourth Proportional to 11,720.09, 17,581.50 and 4,702.55

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Solution

The fourth proportional to 11,720.09, 17,581.50 and 4,702.55 is: 7,054.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.09 : 17,581.50 = 4,702.55 : x
  2. Step 2: Convert to fraction form
    11,720.09/17,581.50 = 4,702.55/x
  3. Step 3: Cross multiply
    11,720.09x = 17,581.50 × 4,702.55
  4. Step 4: Simplify right side
    11,720.09x = 82,677,859.31
  5. Step 5: Solve for x
    x = 82,677,859.31/11,720.09
  6. Step 6: Final answer
    x = 7,054.37

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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.