Home / 39,286.18-58,923.42-12,991.06

Finding the Fourth Proportional to 39,286.18, 58,923.42 and 12,991.06

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Solution

The fourth proportional to 39,286.18, 58,923.42 and 12,991.06 is: 19,484.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,286.18 : 58,923.42 = 12,991.06 : x
  2. Step 2: Convert to fraction form
    39,286.18/58,923.42 = 12,991.06/x
  3. Step 3: Cross multiply
    39,286.18x = 58,923.42 × 12,991.06
  4. Step 4: Simplify right side
    39,286.18x = 765,477,684.63
  5. Step 5: Solve for x
    x = 765,477,684.63/39,286.18
  6. Step 6: Final answer
    x = 19,484.66

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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.