Home / 9,992.09-13,788.99-5,515.90

Finding the Fourth Proportional to 9,992.09, 13,788.99 and 5,515.90

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Solution

The fourth proportional to 9,992.09, 13,788.99 and 5,515.90 is: 7,611.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,992.09 : 13,788.99 = 5,515.90 : x
  2. Step 2: Convert to fraction form
    9,992.09/13,788.99 = 5,515.90/x
  3. Step 3: Cross multiply
    9,992.09x = 13,788.99 × 5,515.90
  4. Step 4: Simplify right side
    9,992.09x = 76,058,655.47
  5. Step 5: Solve for x
    x = 76,058,655.47/9,992.09
  6. Step 6: Final answer
    x = 7,611.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.