Home / 13,618.09-18,790.92-7,648.62

Finding the Fourth Proportional to 13,618.09, 18,790.92 and 7,648.62

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Solution

The fourth proportional to 13,618.09, 18,790.92 and 7,648.62 is: 10,553.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.09 : 18,790.92 = 7,648.62 : x
  2. Step 2: Convert to fraction form
    13,618.09/18,790.92 = 7,648.62/x
  3. Step 3: Cross multiply
    13,618.09x = 18,790.92 × 7,648.62
  4. Step 4: Simplify right side
    13,618.09x = 143,724,536.06
  5. Step 5: Solve for x
    x = 143,724,536.06/13,618.09
  6. Step 6: Final answer
    x = 10,553.94

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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.