Home / 18,678.96-25,768.80-13,371.84

Finding the Fourth Proportional to 18,678.96, 25,768.80 and 13,371.84

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Solution

The fourth proportional to 18,678.96, 25,768.80 and 13,371.84 is: 18,447.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678.96 : 25,768.80 = 13,371.84 : x
  2. Step 2: Convert to fraction form
    18,678.96/25,768.80 = 13,371.84/x
  3. Step 3: Cross multiply
    18,678.96x = 25,768.80 × 13,371.84
  4. Step 4: Simplify right side
    18,678.96x = 344,576,270.59
  5. Step 5: Solve for x
    x = 344,576,270.59/18,678.96
  6. Step 6: Final answer
    x = 18,447.29

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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.