Home / 9,519.93-13,111.07-8,781.21

Finding the Fourth Proportional to 9,519.93, 13,111.07 and 8,781.21

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Solution

The fourth proportional to 9,519.93, 13,111.07 and 8,781.21 is: 12,093.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,519.93 : 13,111.07 = 8,781.21 : x
  2. Step 2: Convert to fraction form
    9,519.93/13,111.07 = 8,781.21/x
  3. Step 3: Cross multiply
    9,519.93x = 13,111.07 × 8,781.21
  4. Step 4: Simplify right side
    9,519.93x = 115,131,015.09
  5. Step 5: Solve for x
    x = 115,131,015.09/9,519.93
  6. Step 6: Final answer
    x = 12,093.68

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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.