Home / 13,436.38-18,536.44-8,391.83

Finding the Fourth Proportional to 13,436.38, 18,536.44 and 8,391.83

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Solution

The fourth proportional to 13,436.38, 18,536.44 and 8,391.83 is: 11,577.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,436.38 : 18,536.44 = 8,391.83 : x
  2. Step 2: Convert to fraction form
    13,436.38/18,536.44 = 8,391.83/x
  3. Step 3: Cross multiply
    13,436.38x = 18,536.44 × 8,391.83
  4. Step 4: Simplify right side
    13,436.38x = 155,554,653.29
  5. Step 5: Solve for x
    x = 155,554,653.29/13,436.38
  6. Step 6: Final answer
    x = 11,577.13

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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.