Home / 39,791.82-59,704.61-18,731.40

Finding the Fourth Proportional to 39,791.82, 59,704.61 and 18,731.40

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Solution

The fourth proportional to 39,791.82, 59,704.61 and 18,731.40 is: 28,105.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,791.82 : 59,704.61 = 18,731.40 : x
  2. Step 2: Convert to fraction form
    39,791.82/59,704.61 = 18,731.40/x
  3. Step 3: Cross multiply
    39,791.82x = 59,704.61 × 18,731.40
  4. Step 4: Simplify right side
    39,791.82x = 1,118,351,055.41
  5. Step 5: Solve for x
    x = 1,118,351,055.41/39,791.82
  6. Step 6: Final answer
    x = 28,105.05

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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.