Home / 20,065.57-27,690.78-11,567.54

Finding the Fourth Proportional to 20,065.57, 27,690.78 and 11,567.54

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Solution

The fourth proportional to 20,065.57, 27,690.78 and 11,567.54 is: 15,963.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,065.57 : 27,690.78 = 11,567.54 : x
  2. Step 2: Convert to fraction form
    20,065.57/27,690.78 = 11,567.54/x
  3. Step 3: Cross multiply
    20,065.57x = 27,690.78 × 11,567.54
  4. Step 4: Simplify right side
    20,065.57x = 320,314,205.28
  5. Step 5: Solve for x
    x = 320,314,205.28/20,065.57
  6. Step 6: Final answer
    x = 15,963.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.