Home / 26,913.80-40,370.70-13,791.80

Finding the Fourth Proportional to 26,913.80, 40,370.70 and 13,791.80

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Solution

The fourth proportional to 26,913.80, 40,370.70 and 13,791.80 is: 20,687.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,913.80 : 40,370.70 = 13,791.80 : x
  2. Step 2: Convert to fraction form
    26,913.80/40,370.70 = 13,791.80/x
  3. Step 3: Cross multiply
    26,913.80x = 40,370.70 × 13,791.80
  4. Step 4: Simplify right side
    26,913.80x = 556,784,620.26
  5. Step 5: Solve for x
    x = 556,784,620.26/26,913.80
  6. Step 6: Final answer
    x = 20,687.70

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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.