Home / 18,361.38-25,340.70-10,809.55

Finding the Fourth Proportional to 18,361.38, 25,340.70 and 10,809.55

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Solution

The fourth proportional to 18,361.38, 25,340.70 and 10,809.55 is: 14,918.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,361.38 : 25,340.70 = 10,809.55 : x
  2. Step 2: Convert to fraction form
    18,361.38/25,340.70 = 10,809.55/x
  3. Step 3: Cross multiply
    18,361.38x = 25,340.70 × 10,809.55
  4. Step 4: Simplify right side
    18,361.38x = 273,921,575.09
  5. Step 5: Solve for x
    x = 273,921,575.09/18,361.38
  6. Step 6: Final answer
    x = 14,918.35

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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.