Home / 13,110.12-18,091.92-7,141.41

Finding the Fourth Proportional to 13,110.12, 18,091.92 and 7,141.41

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Solution

The fourth proportional to 13,110.12, 18,091.92 and 7,141.41 is: 9,855.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.12 : 18,091.92 = 7,141.41 : x
  2. Step 2: Convert to fraction form
    13,110.12/18,091.92 = 7,141.41/x
  3. Step 3: Cross multiply
    13,110.12x = 18,091.92 × 7,141.41
  4. Step 4: Simplify right side
    13,110.12x = 129,201,818.41
  5. Step 5: Solve for x
    x = 129,201,818.41/13,110.12
  6. Step 6: Final answer
    x = 9,855.12

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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.