Home / 13,110.09-18,092.11-7,141.75

Finding the Fourth Proportional to 13,110.09, 18,092.11 and 7,141.75

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Solution

The fourth proportional to 13,110.09, 18,092.11 and 7,141.75 is: 9,855.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.09 : 18,092.11 = 7,141.75 : x
  2. Step 2: Convert to fraction form
    13,110.09/18,092.11 = 7,141.75/x
  3. Step 3: Cross multiply
    13,110.09x = 18,092.11 × 7,141.75
  4. Step 4: Simplify right side
    13,110.09x = 129,209,326.59
  5. Step 5: Solve for x
    x = 129,209,326.59/13,110.09
  6. Step 6: Final answer
    x = 9,855.72

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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.