Home / 11,381.03-15,705.05-7,131.97

Finding the Fourth Proportional to 11,381.03, 15,705.05 and 7,131.97

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Solution

The fourth proportional to 11,381.03, 15,705.05 and 7,131.97 is: 9,841.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,381.03 : 15,705.05 = 7,131.97 : x
  2. Step 2: Convert to fraction form
    11,381.03/15,705.05 = 7,131.97/x
  3. Step 3: Cross multiply
    11,381.03x = 15,705.05 × 7,131.97
  4. Step 4: Simplify right side
    11,381.03x = 112,007,945.45
  5. Step 5: Solve for x
    x = 112,007,945.45/11,381.03
  6. Step 6: Final answer
    x = 9,841.64

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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.