Home / 13,110.05-18,091.81-7,141.97

Finding the Fourth Proportional to 13,110.05, 18,091.81 and 7,141.97

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Solution

The fourth proportional to 13,110.05, 18,091.81 and 7,141.97 is: 9,855.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.05 : 18,091.81 = 7,141.97 : x
  2. Step 2: Convert to fraction form
    13,110.05/18,091.81 = 7,141.97/x
  3. Step 3: Cross multiply
    13,110.05x = 18,091.81 × 7,141.97
  4. Step 4: Simplify right side
    13,110.05x = 129,211,178.25
  5. Step 5: Solve for x
    x = 129,211,178.25/13,110.05
  6. Step 6: Final answer
    x = 9,855.89

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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.