Home / 18,658.38-27,986.66-6,970.68

Finding the Fourth Proportional to 18,658.38, 27,986.66 and 6,970.68

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Solution

The fourth proportional to 18,658.38, 27,986.66 and 6,970.68 is: 10,455.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.38 : 27,986.66 = 6,970.68 : x
  2. Step 2: Convert to fraction form
    18,658.38/27,986.66 = 6,970.68/x
  3. Step 3: Cross multiply
    18,658.38x = 27,986.66 × 6,970.68
  4. Step 4: Simplify right side
    18,658.38x = 195,086,051.13
  5. Step 5: Solve for x
    x = 195,086,051.13/18,658.38
  6. Step 6: Final answer
    x = 10,455.68

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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.