Home / 17,986.38-26,979.60-4,838.40

Finding the Fourth Proportional to 17,986.38, 26,979.60 and 4,838.40

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Solution

The fourth proportional to 17,986.38, 26,979.60 and 4,838.40 is: 7,257.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,986.38 : 26,979.60 = 4,838.40 : x
  2. Step 2: Convert to fraction form
    17,986.38/26,979.60 = 4,838.40/x
  3. Step 3: Cross multiply
    17,986.38x = 26,979.60 × 4,838.40
  4. Step 4: Simplify right side
    17,986.38x = 130,538,096.64
  5. Step 5: Solve for x
    x = 130,538,096.64/17,986.38
  6. Step 6: Final answer
    x = 7,257.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.